diff --git a/Cpp_example/C08_Apriltag/CMakeLists.txt b/Cpp_example/C08_Apriltag/CMakeLists.txt
index 704f22cdf800f16e35bf6bd1a71c4131723a9300..9e43592d901c5377ba06706726a570d6c58c38a6 100644
--- a/Cpp_example/C08_Apriltag/CMakeLists.txt
+++ b/Cpp_example/C08_Apriltag/CMakeLists.txt
@@ -25,16 +25,18 @@ find_library(APRILTAG_LIB NAMES apriltag PATHS ${APRILTAG_LIB_DIR} REQUIRED)
 # include_directories("${PROJECT_ROOT_PATH}/third_party/eigen-master/")
 include_directories("${PROJECT_ROOT_PATH}/third_party/apriltag-with-pose-estimation-master")
 
-# 设置 Eigen 路径
-set(EIGEN_ROOT_DIR "${PROJECT_ROOT_PATH}/third_party/eigen-master")
+# 定义 Eigen 路径
+set(Eigen_ROOT_PATH "${PROJECT_ROOT_PATH}/third_party/lockzhiner_vision_module_sdk/third_party/eigen")
+set(Eigen_DIR "${Eigen_ROOT_PATH}/include/eigen3/")
 
 # 添加头文件搜索路径
 include_directories(
-    ${EIGEN_ROOT_DIR}
+    ${Eigen_DIR}
     ${LOCKZHINER_VISION_MODULE_INCLUDE_DIRS}
     ${PROJECT_SOURCE_DIR}
 )
 
+
 # 创建可执行文件
 add_executable(Test_Apriltag Apriltag.cc)
 # 告诉 Eigen 使用最大 8 字节对齐（armv7l 平台限制）