diff --git a/base/src/file_ex.cpp b/base/src/file_ex.cpp
index d52f1b4..61b4cc3 100755
--- a/base/src/file_ex.cpp
+++ b/base/src/file_ex.cpp
@@ -29,7 +29,7 @@
 
 using namespace std;
 
-const int MAX_FILE_LENGTH = 32 * 1024 * 1024;
+const int MAX_FILE_LENGTH = 320 * 1024 * 1024;
 
 namespace OHOS {