diff --git a/resourceschedule/ffrt/BUILD.gn b/resourceschedule/ffrt/BUILD.gn
index 0e48ac34e8c364d7830b42ff57c733b5a1402973..f9ad3084ea728edb153ca2498c4319845cf7fbfe 100644
--- a/resourceschedule/ffrt/BUILD.gn
+++ b/resourceschedule/ffrt/BUILD.gn
@@ -9,7 +9,7 @@
 # distributed under the License is distributed on an "AS IS" BASIS,
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
-# limitations under the License.
+# limitations under the License.
 
 import("//build/ohos.gni")
 import("//build/ohos/ndk/ndk.gni")
@@ -18,7 +18,6 @@ ohos_ndk_headers("ffrt_header") {
   dest_dir = "$ndk_headers_out_dir/ffrt"
   sources = [
     "c/condition_variable.h",
-    "c/fiber.h",
     "c/loop.h",
     "c/mutex.h",
     "c/queue.h",
@@ -36,7 +35,6 @@ ohos_ndk_library("libffrt_ndk") {
   system_capability = "SystemCapability.Resourceschedule.Ffrt.Core"
   system_capability_headers = [
     "ffrt/condition_variable.h",
-    "ffrt/fiber.h",
     "ffrt/loop.h",
     "ffrt/mutex.h",
     "ffrt/queue.h",
diff --git a/resourceschedule/ffrt/c/fiber.h b/resourceschedule/ffrt/c/fiber.h
deleted file mode 100644
index c5096c38ad1463d707134d88cca289cca5a7eef4..0000000000000000000000000000000000000000
--- a/resourceschedule/ffrt/c/fiber.h
+++ /dev/null
@@ -1,71 +0,0 @@
-/*
- * Copyright (c) 2025 Huawei Device Co., Ltd.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-/**
- * @addtogroup FFRT
- * @{
- *
- * @brief Provides FFRT C APIs.
- *
- * @since 20
- */
-
-/**
- * @file fiber.h
- *
- * @brief Declares the fiber interfaces in C.
- *
- * @library libffrt.z.so
- * @kit FunctionFlowRuntimeKit
- * @syscap SystemCapability.Resourceschedule.Ffrt.Core
- * @since 20
- */
-
-#ifndef FFRT_API_C_FIBER_H
-#define FFRT_API_C_FIBER_H
-
-#include "type_def.h"
-
-/**
- * @brief Initializes a fiber.
- *
- * This function initializes a fiber structure, preparing it for execution.
- *
- * @param fiber Indicates the pointer to the fiber structure to be initialized.
- * @param func Indicates the entry point function that the fiber will execute.
- * @param arg Indicates the argument to be passed to the entry point function.
- * @param stack Indicates the pointer to the memory region to be used as the fiber's stack.
- * @param stack_size Indicates the size of the stack in bytes.
- * @return Returns <b>ffrt_success</b> if the fiber is initialized;
-           returns <b>ffrt_error</b> otherwise.
- * @since 20
- */
-FFRT_C_API int ffrt_fiber_init(ffrt_fiber_t* fiber, void(*func)(void*), void* arg, void* stack, size_t stack_size);
-
-
-/**
- * @brief Switch execution context between two fibers.
- *
- * Switches the execution context by saving the current context into the fiber specified
- * by @c from and restoring the context from the fiber specified by @c to.
- *
- * @param from Indicates the pointer to the fiber into which the current context will be saved.
- * @param to Indicates the pointer to the fiber from which the context will be restored.
- * @since 20
- */
-FFRT_C_API void ffrt_fiber_switch(ffrt_fiber_t* from, ffrt_fiber_t* to);
-
-#endif // FFRT_API_C_FIBER_H
-/** @} */
\ No newline at end of file
diff --git a/resourceschedule/ffrt/c/type_def.h b/resourceschedule/ffrt/c/type_def.h
index b91ceeb5162b823d3de363081a248103411daf74..7fc8c6ed9ffbcd36287417236ddc23ba43a4cf84 100644
--- a/resourceschedule/ffrt/c/type_def.h
+++ b/resourceschedule/ffrt/c/type_def.h
@@ -128,25 +128,6 @@ typedef enum {
      * @since 18
      */
     ffrt_rwlock_storage_size = 64,
-    /** Fiber storage size.
-     *
-     * This constant defines the fiber storage size.
-     * The actual value depends on the target architecture:
-     * - __aarch64__: 22
-     * - __arm__: 64
-     * - __x86_64__: 8
-     *
-     * @since 20
-     */
-#if defined(__aarch64__)
-    ffrt_fiber_storage_size = 22,
-#elif defined(__arm__)
-    ffrt_fiber_storage_size = 64,
-#elif defined(__x86_64__)
-    ffrt_fiber_storage_size = 8,
-#else
-#error "unsupported architecture"
-#endif
 } ffrt_storage_size_t;
 
 /**
@@ -321,16 +302,6 @@ typedef struct {
     uint32_t storage[(ffrt_cond_storage_size + sizeof(uint32_t) - 1) / sizeof(uint32_t)];
 } ffrt_cond_t;
 
-/**
- * @brief Defines the fiber structure.
- *
- * @since 20
- */
-typedef struct {
-    /** An array of uint32_t used to store the fiber. */
-    uintptr_t storage[ffrt_fiber_storage_size];
-} ffrt_fiber_t;
-
 /**
  * @brief Defines the poller callback function type.
  *
diff --git a/resourceschedule/ffrt/ffrt.ndk.json b/resourceschedule/ffrt/ffrt.ndk.json
index 3ab20c1207d048ce613800956e2b5aaeba381411..84474b74e9e78a4696851d5e8fb3a719875d21b7 100644
--- a/resourceschedule/ffrt/ffrt.ndk.json
+++ b/resourceschedule/ffrt/ffrt.ndk.json
@@ -115,14 +115,6 @@
         "first_introduced": "12",
         "name": "ffrt_task_handle_dec_ref"
     },
-    {
-        "first_introduced": "20",
-        "name": "ffrt_fiber_init"
-    },
-    {
-        "first_introduced": "20",
-        "name": "ffrt_fiber_switch"
-    },
     { "name": "ffrt_task_handle_destroy" },
     { "name": "ffrt_wait_deps" },
     { "name": "ffrt_wait" },