diff --git a/build/signtools/generate_signature.py b/build/signtools/generate_signature.py
index 6cddfaf615cd2475128d6bb6e6dd6a3e0d53606e..382aa910a6e88e355329328c889c2e66c611cb2b 100644
--- a/build/signtools/generate_signature.py
+++ b/build/signtools/generate_signature.py
@@ -11,9 +11,6 @@
 # KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO
 # NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
 # See the Mulan PSL v2 for more details.
-# Description: tools for generating a trusted application load image
-# Author: Li mingjuan
-# Create: 2020-10-27
 #----------------------------------------------------------------------------
 
 import struct
diff --git a/build/signtools/manifest.py b/build/signtools/manifest.py
index 9cc23600a2a40282edbbbebdf004b6e2892da43e..64681906d9147de2ddb16b9138ced11e797823aa 100755
--- a/build/signtools/manifest.py
+++ b/build/signtools/manifest.py
@@ -11,9 +11,6 @@
 # KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO
 # NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
 # See the Mulan PSL v2 for more details.
-# Description: tools for generating a trusted application load image
-# Author: Li mingjuan
-# Create: 2018-02-20
 #----------------------------------------------------------------------------
 import string
 import struct
diff --git a/build/signtools/signtool_v3.py b/build/signtools/signtool_v3.py
index 059088763df0b476a19cde792b74f5fedc436ee4..39a719dd0466fb5190063fdefc4d1c016c703a99 100755
--- a/build/signtools/signtool_v3.py
+++ b/build/signtools/signtool_v3.py
@@ -11,9 +11,6 @@
 # KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO
 # NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
 # See the Mulan PSL v2 for more details.
-# Description: tools for generating a trusted application load image
-# Author: Li mingjuan
-# Create: 2018-02-20
 #----------------------------------------------------------------------------
 
 import struct
diff --git a/build/tools/ta_link_64.ld b/build/tools/ta_link_64.ld
index d6bdad862c29a9990c6a3ad3625bf84e29333936..61388e0097dcbdc1006ace8618d3d1060c1883ee 100644
--- a/build/tools/ta_link_64.ld
+++ b/build/tools/ta_link_64.ld
@@ -8,9 +8,6 @@
  * IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR
  * PURPOSE.
  * See the Mulan PSL v2 for more details.
- * Description: Describe the link file for 64bits TA
- * Author: He pengfei
- * Create: 2019-12-03
  */
 
 OUTPUT_FORMAT("elf64-littleaarch64", "elf64-bigaarch64",
diff --git a/include/CA/tee_client_api.h b/include/CA/tee_client_api.h
index 88c79691f01f5dffeb6ecf0fbeb0f11ec3f3cc99..c139d4dab77a6a06814ca72411e9bb8ac63260d2 100644
--- a/include/CA/tee_client_api.h
+++ b/include/CA/tee_client_api.h
@@ -8,9 +8,6 @@
  * IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR
  * PURPOSE.
  * See the Mulan PSL v2 for more details.
- * Author: HanPeng
- * Create: 2013-4-22
- * Description: TEE client API definitions
  */
 
 #ifndef _TEE_CLIENT_API_H_
diff --git a/include/CA/tee_client_constants.h b/include/CA/tee_client_constants.h
index bd55b825c73716923d66baeac461f6e795a4f80e..9ddff9b3c4d01d94533ae9355d10e530d1d2b0dc 100644
--- a/include/CA/tee_client_constants.h
+++ b/include/CA/tee_client_constants.h
@@ -8,9 +8,6 @@
  * IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR
  * PURPOSE.
  * See the Mulan PSL v2 for more details.
- * Author: HanPeng
- * Create: 2013-4-22
- * Description: static definitions of client API
  */
 
 #ifndef _TEE_CLIENT_CONSTANTS_H_
diff --git a/include/CA/tee_client_list.h b/include/CA/tee_client_list.h
index 6dcf4e19aa1b0cf156e554d7d336e8b42182bc4c..4aa6a53dca5227db5be20b4117b6ff1cb23c54c0 100644
--- a/include/CA/tee_client_list.h
+++ b/include/CA/tee_client_list.h
@@ -8,9 +8,6 @@
  * IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR
  * PURPOSE.
  * See the Mulan PSL v2 for more details.
- * Author: zhangdeyao
- * Create: 2013-04-22
- * Description: linked list data types and basic operations
  */
 
 #ifndef TEE_CLIENT_LIST_H
diff --git a/include/CA/tee_client_log.h b/include/CA/tee_client_log.h
index b9f5f600711e9dabba7d75a27ffc145f887ef358..e3b7faee871549433acb30abdf33a23cd2a2da0f 100644
--- a/include/CA/tee_client_log.h
+++ b/include/CA/tee_client_log.h
@@ -8,9 +8,6 @@
  * IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR
  * PURPOSE.
  * See the Mulan PSL v2 for more details.
- * Author: zhangdeyao
- * Create: 2020-03-31
- * Description: TEE client log api
  */
 
 #ifndef TEE_CLIENT_LOG_H
diff --git a/include/CA/tee_client_type.h b/include/CA/tee_client_type.h
index e7dd70971e1a721dbbc21c1ae16af1ec5e63e18c..c5b97e32ea3d337b932bad7f6b22b9b71fdd88fe 100644
--- a/include/CA/tee_client_type.h
+++ b/include/CA/tee_client_type.h
@@ -8,9 +8,6 @@
  * IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR
  * PURPOSE.
  * See the Mulan PSL v2 for more details.
- * Author: hanpeng
- * Create: 2013-04-22
- * Description: data type and structure definition according to GP
  */
 
 #ifndef _TEE_CLIENT_TYPE_H_
diff --git a/include/TA/huawei_ext/crypto_wrapper.h b/include/TA/huawei_ext/crypto_wrapper.h
index f6f2b96972ab907f3e2ebb1753fd814bf41d011d..e05e90b94080253993266082992e5a390c494123 100755
--- a/include/TA/huawei_ext/crypto_wrapper.h
+++ b/include/TA/huawei_ext/crypto_wrapper.h
@@ -8,9 +8,6 @@
  * IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR
  * PURPOSE.
  * See the Mulan PSL v2 for more details.
- * Author: Yaodongdong
- * Create: 2019-05-29
- * Description: soft engine in boringssl
  */
 #ifndef __CRYPTO_WRAPPER_H__
 #define __CRYPTO_WRAPPER_H__
diff --git a/include/TA/huawei_ext/tee_crypto_hal.h b/include/TA/huawei_ext/tee_crypto_hal.h
index 878794bb9971948ce804cf0d2e85299014d7631a..744461885176a5d7df2d2ec1253f93cf25f0c0ec 100755
--- a/include/TA/huawei_ext/tee_crypto_hal.h
+++ b/include/TA/huawei_ext/tee_crypto_hal.h
@@ -8,9 +8,6 @@
  * IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR
  * PURPOSE.
  * See the Mulan PSL v2 for more details.
- * Author: jialingyu
- * Create: 2019-01-20
- * Description: crypto hal info function
  */
 
 #ifndef TEE_CRYPTO_HAL_H
diff --git a/include/TA/huawei_ext/tee_ext_api.h b/include/TA/huawei_ext/tee_ext_api.h
index b8b13290b47a7960446cb20588676e9d3d3e4a6d..d74c7494bec20e07eb8114237334a69a1fd193f7 100644
--- a/include/TA/huawei_ext/tee_ext_api.h
+++ b/include/TA/huawei_ext/tee_ext_api.h
@@ -8,9 +8,6 @@
  * IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR
  * PURPOSE.
  * See the Mulan PSL v2 for more details.
- * Author: huangjiankang
- * Create: 2012-03-20
- * Description: Tee ext api header file
  */
 
 #ifndef TEE_EXT_API_H
diff --git a/include/TA/huawei_ext/tee_log.h b/include/TA/huawei_ext/tee_log.h
index 36fc1d5e2a942a98b99dce189f6c44e32484ba13..dc213dadeeb81e03d48f8e1c636b37937cb3b795 100644
--- a/include/TA/huawei_ext/tee_log.h
+++ b/include/TA/huawei_ext/tee_log.h
@@ -8,9 +8,6 @@
  * IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR
  * PURPOSE.
  * See the Mulan PSL v2 for more details.
- * Author: Hanpeng
- * Create: 2018-12-13
- * Description: Reference of TEE log api and internal definitions
  */
 
 #ifndef __TEE_LOG_H
diff --git a/include/TA/tee_arith_api.h b/include/TA/tee_arith_api.h
index a2159e930bdaa59d2382f819dfb353c37dead3ef..76ca0b0174c04eb1d49a161f4b0cd0e14e8ea827 100755
--- a/include/TA/tee_arith_api.h
+++ b/include/TA/tee_arith_api.h
@@ -8,9 +8,6 @@
  * IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR
  * PURPOSE.
  * See the Mulan PSL v2 for more details.
- * Author: qiqingchao
- * Create: 2012-01-20
- * Description: tee crypto definitions
  */
 
 #ifndef TEE_ARITH_API_H
diff --git a/include/TA/tee_core_api.h b/include/TA/tee_core_api.h
index babbac1d5a12a72dce662d93334c890b9d6c7042..c07be0b142eb4a1faeaebab62de396f6b578f10b 100644
--- a/include/TA/tee_core_api.h
+++ b/include/TA/tee_core_api.h
@@ -8,9 +8,6 @@
  * IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR
  * PURPOSE.
  * See the Mulan PSL v2 for more details.
- * Author: Hanpeng
- * Create: 2018-12-13
- * Description: tee core api definitions
  */
 #ifndef __TEE_CORE_API_H
 #define __TEE_CORE_API_H
diff --git a/include/TA/tee_crypto_api.h b/include/TA/tee_crypto_api.h
index ef4b1585d17cb867c1b99629fd173015c09abcc7..c711d3018c48d65ee4c03c8b63325c0441036f1b 100644
--- a/include/TA/tee_crypto_api.h
+++ b/include/TA/tee_crypto_api.h
@@ -8,9 +8,6 @@
  * IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR
  * PURPOSE.
  * See the Mulan PSL v2 for more details.
- * Author: jialingyu
- * Create: 2018-12-13
- * Description: tee crypto definitions
  */
 
 #ifndef TEE_CRYPTO_API_H
diff --git a/include/TA/tee_defines.h b/include/TA/tee_defines.h
index e2cabe9e0f872affc89bd993d2ad7f376d4f790d..8289c07b6d5f94c119003117a6b6013221249d11 100755
--- a/include/TA/tee_defines.h
+++ b/include/TA/tee_defines.h
@@ -8,9 +8,6 @@
  * IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR
  * PURPOSE.
  * See the Mulan PSL v2 for more details.
- * Description: Reference of TEE internal api and internal definitions
- * Author: Hanpeng
- * Create: 2018-12-13
  */
 
 #ifndef __TEE_DEFINES_H
diff --git a/include/TA/tee_mem_mgmt_api.h b/include/TA/tee_mem_mgmt_api.h
index d4b0c488307f19f359c07d1f7ebb5b8f5e8da3f5..5b915661c0fb9eb7711a6d788576c9d2b1b07111 100644
--- a/include/TA/tee_mem_mgmt_api.h
+++ b/include/TA/tee_mem_mgmt_api.h
@@ -8,9 +8,6 @@
  * IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR
  * PURPOSE.
  * See the Mulan PSL v2 for more details.
- * Author: yaodongdong
- * Create: 2012-12-31
- * Description: Header file of memory management api
  */
 
 #ifndef TEE_MEM_MGMT_API_H
diff --git a/include/TA/tee_object_api.h b/include/TA/tee_object_api.h
index 76cdc762d390e1d5bc7e70a5e62ca4ee2b8ac24d..c8200e5d1897774be9ae234c81d7b7373fbbb33d 100644
--- a/include/TA/tee_object_api.h
+++ b/include/TA/tee_object_api.h
@@ -8,9 +8,6 @@
  * IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR
  * PURPOSE.
  * See the Mulan PSL v2 for more details.
- * Author: HuangJiankang
- * Create: 2018-12-13
- * Description: Reference of TEE object api definitions
  */
 
 #ifndef __TEE_OBJECT_API_H
diff --git a/include/TA/tee_property_api.h b/include/TA/tee_property_api.h
index 523ac36620d318efb5b5e25c1a8a77e64431242c..fb00a963225f321cb016e1a870edec2d4c0854c3 100644
--- a/include/TA/tee_property_api.h
+++ b/include/TA/tee_property_api.h
@@ -8,9 +8,6 @@
  * IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR
  * PURPOSE.
  * See the Mulan PSL v2 for more details.
- * Author: huangjiankang
- * Create: 2012-01-20
- * Description: TEE property implementation header file
  */
 
 #ifndef TEE_PROPERTY_API_H
diff --git a/include/TA/tee_time_api.h b/include/TA/tee_time_api.h
index aeb2056e86e067762b53231efc70dd0fd09e7277..31cc5f8a46bf77b3f8159cfdd31b45c2faddc492 100644
--- a/include/TA/tee_time_api.h
+++ b/include/TA/tee_time_api.h
@@ -8,9 +8,6 @@
  * IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR
  * PURPOSE.
  * See the Mulan PSL v2 for more details.
- * Author: Hanpeng
- * Create: 2018-12-13
- * Description: Reference of TEE time api definitions
  */
 
 #ifndef __TEE_TIME_API_H
diff --git a/src/CA/cloud/libteec_adaptor.c b/src/CA/cloud/libteec_adaptor.c
index 250cae4c3b5ab2a1f968d6c0b17e9504e44fa07a..f7a647eaf28a8c516116ee930fbb256134610de9 100644
--- a/src/CA/cloud/libteec_adaptor.c
+++ b/src/CA/cloud/libteec_adaptor.c
@@ -8,9 +8,6 @@
  * IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR
  * PURPOSE.
  * See the Mulan PSL v2 for more details.
- * Author: lipeng
- * Create: 2019.4.30
- * Description: this file is used for adapting interfaces in libteec.so
  */
 
 #include <dlfcn.h>
diff --git a/test/CA/helloworld/ca_demo.c b/test/CA/helloworld/ca_demo.c
index 93e771c899228f4253dca783a1d4c49d24d09961..57c0e35e918294fca240864d8fab6e19f13862f7 100755
--- a/test/CA/helloworld/ca_demo.c
+++ b/test/CA/helloworld/ca_demo.c
@@ -8,9 +8,6 @@
  * IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR
  * PURPOSE.
  * See the Mulan PSL v2 for more details.
- * Author: liushengwei
- * Create: 2020-6-24
- * Description: C file template for CA
  */
 
 #include <stdio.h>
diff --git a/test/TA/helloworld/ta_demo.c b/test/TA/helloworld/ta_demo.c
index b5246f93e9948797f0999a8f9ba41898464882f0..ec17d6d93ef190de35ae3d5a9e4f03e10d9667db 100755
--- a/test/TA/helloworld/ta_demo.c
+++ b/test/TA/helloworld/ta_demo.c
@@ -8,9 +8,6 @@
  * IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR
  * PURPOSE.
  * See the Mulan PSL v2 for more details.
- * Description: TA template code for reference
- * Author: huangjiankang
- * Create: 2020-02-20
  */
 
 #include <tee_ext_api.h>