diff --git a/Source/Engine/Gramambular/BlockReadingBuilder.h b/Source/Engine/Gramambular/BlockReadingBuilder.h
index b4c5bcc4..af4e4b97 100644
--- a/Source/Engine/Gramambular/BlockReadingBuilder.h
+++ b/Source/Engine/Gramambular/BlockReadingBuilder.h
@@ -46,7 +46,7 @@ namespace Taiyan {
             static const string Join(vector<string>::const_iterator begin, vector<string>::const_iterator end, const string& separator);
             
         //最多使用六個字組成一個詞
-            static const size_t MaximumBuildSpanLength = 6;
+            static const size_t MaximumBuildSpanLength = 10;
             
             size_t m_cursorIndex;
             size_t m_markerCursorIndex;