diff --git a/CMakeLists.txt b/CMakeLists.txt
index b9d072241c409850ac4b4fa97149fb56bd9c16ca..4762be0a476941195fca3f06228acb237c4c2493 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,6 +1,6 @@
 cmake_minimum_required(VERSION 3.6)
 
-option(USE_OPENMP "openmp support" OFF)
+option(USE_OPENMP "openmp support" ON)
 option(DEBUGING "enable debug mode" OFF)
 option(USE_EXCEPTION "use std exception" ON)
 option(SYMBOL_HIDDEN "symbol hidden" OFF) # on when use jni or ios io