diff --git a/build_kernel.sh b/build_kernel.sh
index e622fbb594070d63ded2eb50c0ef5a5842941f94..8d840d97935696070b1c643100fe45461ef05ff4 100755
--- a/build_kernel.sh
+++ b/build_kernel.sh
@@ -23,5 +23,17 @@ set -e
 pushd ${1}
 ./kernel_module_build.sh ${2} ${4} ${5} ${6} ${7} ${8}
 mkdir -p ${3}
-cp ${2}/kernel/src_tmp/${8}/arch/arm/boot/uImage ${3}/uImage
+
+#distinguish different board[nxp]
+if [ $7 == "imx8mm" ];then
+    cp ${2}/kernel/src_tmp/${8}/arch/arm64/boot/Image ${3}/Image
+        if [ -d ${3}/dtb ];then
+        echo "${3}/dtb existed!"
+    else
+        mkdir -p ${3}/dtb
+    fi
+    cp ${2}/kernel/src_tmp/linux-4.19/arch/arm64/boot/dts/myir/*.dtb ${3}/dtb
+else
+    cp ${2}/kernel/src_tmp/${8}/arch/arm/boot/uImage ${3}/uImage
+fi
 popd
diff --git a/kernel.mk b/kernel.mk
index 56fcde79ef552cf7816d12b48202bbe0a1564870..fa0b9ae2b4f62faa6a16f8968cfdb5c01199d08e 100644
--- a/kernel.mk
+++ b/kernel.mk
@@ -32,10 +32,17 @@ KERNEL_HOSTCC := $(CLANG_HOST_TOOLCHAIN)/clang
 KERNEL_PREBUILT_MAKE := make
 
 ifeq ($(BUILD_TYPE), standard)
-    KERNEL_ARCH := arm
-    KERNEL_TARGET_TOOLCHAIN := $(PREBUILTS_GCC_DIR)/linux-x86/arm/gcc-linaro-7.5.0-arm-linux-gnueabi/bin
-    KERNEL_TARGET_TOOLCHAIN_PREFIX := $(KERNEL_TARGET_TOOLCHAIN)/arm-linux-gnueabi-
-    CLANG_CC := $(CLANG_HOST_TOOLCHAIN)/clang
+    ifeq ($(DEVICE_NAME), imx8mm)
+        KERNEL_ARCH := arm64
+        KERNEL_TARGET_TOOLCHAIN := $(PREBUILTS_GCC_DIR)/linux-x86/aarch64/gcc-linaro-7.5.0-2019.12-x86_64_aarch64-linux-gnu/bin
+        KERNEL_TARGET_TOOLCHAIN_PREFIX := $(KERNEL_TARGET_TOOLCHAIN)/aarch64-linux-gnu-
+        CLANG_CC := $(CLANG_HOST_TOOLCHAIN)/clang
+    else
+        KERNEL_ARCH := arm
+        KERNEL_TARGET_TOOLCHAIN := $(PREBUILTS_GCC_DIR)/linux-x86/arm/gcc-linaro-7.5.0-arm-linux-gnueabi/bin
+        KERNEL_TARGET_TOOLCHAIN_PREFIX := $(KERNEL_TARGET_TOOLCHAIN)/arm-linux-gnueabi-
+        CLANG_CC := $(CLANG_HOST_TOOLCHAIN)/clang
+    endif
 else ifeq ($(BUILD_TYPE), small)
     KERNEL_ARCH := arm
     ifeq ($(CLANG_CC), "")
@@ -65,11 +72,25 @@ DEVICE_PATCH_DIR := $(OHOS_BUILD_HOME)/kernel/linux/patches/${KERNEL_VERSION}/$(
 DEVICE_PATCH_FILE := $(DEVICE_PATCH_DIR)/$(DEVICE_NAME).patch
 HDF_PATCH_FILE := $(DEVICE_PATCH_DIR)/hdf.patch
 SMALL_PATCH_FILE := $(DEVICE_PATCH_DIR)/$(DEVICE_NAME)_$(BUILD_TYPE).patch
-KERNEL_IMAGE_FILE := $(KERNEL_SRC_TMP_PATH)/arch/arm/boot/uImage
-DEFCONFIG_FILE := $(DEVICE_NAME)_$(BUILD_TYPE)_defconfig
+ifeq ($(DEVICE_NAME), imx8mm)
+    KERNEL_IMAGE_FILE := $(KERNEL_SRC_TMP_PATH)/arch/arm64/boot/Image
+    DEFCONFIG_FILE := myd_imx8mm_defconfig
+else
+    KERNEL_IMAGE_FILE := $(KERNEL_SRC_TMP_PATH)/arch/arm/boot/uImage
+    DEFCONFIG_FILE := $(DEVICE_NAME)_$(BUILD_TYPE)_defconfig
+endif
 export HDF_PROJECT_ROOT=$(OHOS_BUILD_HOME)/
 
 $(KERNEL_IMAGE_FILE):
+ifeq ($(DEVICE_NAME), imx8mm)
+	$(hide) echo "build kernel..."
+	$(hide) rm -rf $(KERNEL_SRC_TMP_PATH);mkdir -p $(KERNEL_SRC_TMP_PATH);cp -arf $(KERNEL_SRC_PATH)/* $(KERNEL_SRC_TMP_PATH)/
+	$(hide) cd $(KERNEL_SRC_TMP_PATH) && patch -p1 < $(HDF_PATCH_FILE) && patch -p1 < $(DEVICE_PATCH_FILE)
+	$(hide) cp -rf $(KERNEL_CONFIG_PATH)/. $(KERNEL_SRC_TMP_PATH)/
+	$(hide) $(KERNEL_MAKE) -C $(KERNEL_SRC_TMP_PATH) ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) distclean
+	$(hide) $(KERNEL_MAKE) -C $(KERNEL_SRC_TMP_PATH) ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) $(DEFCONFIG_FILE)
+	$(hide) $(KERNEL_MAKE) -C $(KERNEL_SRC_TMP_PATH) ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) dtbs Image modules -j24
+else
 	$(hide) echo "build kernel..."
 	$(hide) rm -rf $(KERNEL_SRC_TMP_PATH);mkdir -p $(KERNEL_SRC_TMP_PATH);cp -arfL $(KERNEL_SRC_PATH)/* $(KERNEL_SRC_TMP_PATH)/
 	$(hide) cd $(KERNEL_SRC_TMP_PATH) && patch -p1 < $(HDF_PATCH_FILE) && patch -p1 < $(DEVICE_PATCH_FILE)
@@ -84,5 +105,6 @@ ifeq ($(KERNEL_VERSION), linux-5.10)
 endif
 	$(hide) $(KERNEL_MAKE) -C $(KERNEL_SRC_TMP_PATH) ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) -j64 uImage
 endif
+endif
 .PHONY: build-kernel
 build-kernel: $(KERNEL_IMAGE_FILE)
diff --git a/kernel_module_build.sh b/kernel_module_build.sh
index 826bd6c3e6bd74ee18376fd4dcd6e22c45d0c72a..94881dd6cf72231f9cedb2bd2921e9f6a256193a 100755
--- a/kernel_module_build.sh
+++ b/kernel_module_build.sh
@@ -41,7 +41,11 @@ fi
 export OHOS_ROOT_PATH=$(pwd)/../../..
 export PRODUCT_PATH=$4
 
-LINUX_KERNEL_UIMAGE_FILE=${LINUX_KERNEL_OUT}/arch/arm/boot/uImage
+if [ $5 == "imx8mm" ];then
+    LINUX_KERNEL_UIMAGE_FILE=${LINUX_KERNEL_OUT}/arch/arm64/boot/Image
+else
+    LINUX_KERNEL_UIMAGE_FILE=${LINUX_KERNEL_OUT}/arch/arm/boot/uImage
+fi
 
 make -f kernel.mk