diff --git a/ch3/examples/CMakeLists.txt b/ch3/examples/CMakeLists.txt
index 4b329f561..8c223285f 100644
--- a/ch3/examples/CMakeLists.txt
+++ b/ch3/examples/CMakeLists.txt
@@ -1,6 +1,8 @@
 include_directories("/usr/include/eigen3")
 add_executable(coordinateTransform coordinateTransform.cpp)
 
+set(CMAKE_CXX_FLAGS "-std=c++14")
+
 find_package(Pangolin REQUIRED)
 include_directories(${Pangolin_INCLUDE_DIRS})
 add_executable(plotTrajectory plotTrajectory.cpp)
diff --git a/ch3/visualizeGeometry/CMakeLists.txt b/ch3/visualizeGeometry/CMakeLists.txt
index 70a966f3d..55e21825b 100644
--- a/ch3/visualizeGeometry/CMakeLists.txt
+++ b/ch3/visualizeGeometry/CMakeLists.txt
@@ -1,7 +1,8 @@
 cmake_minimum_required( VERSION 2.8 )
 project( visualizeGeometry )
 
-set(CMAKE_CXX_FLAGS "-std=c++11")
+# set(CMAKE_CXX_FLAGS "-std=c++11")
+set(CMAKE_CXX_FLAGS "-std=c++14")
 
 # 添加Eigen头文件
 include_directories( "/usr/include/eigen3" )