diff --git a/src/osgPlugins/obj/OBJWriterNodeVisitor.cpp b/src/osgPlugins/obj/OBJWriterNodeVisitor.cpp
index 3437a60b9..eaaec1187 100644
--- a/src/osgPlugins/obj/OBJWriterNodeVisitor.cpp
+++ b/src/osgPlugins/obj/OBJWriterNodeVisitor.cpp
@@ -69,6 +69,19 @@ class ValueVisitor : public osg::ValueVisitor {
             if (_applyMatrix)  v = (_isNormal) ? (v * _m) - _origin : v * _m;
             _fout << v[0] << ' ' << v[1] << ' ' << v[2];
         }
+
+        //add Vec3dArray* vertex output to avoid inaccuracy
+        virtual void apply(osg::Vec3d & inv)
+        {
+            osg::Vec3d v(inv[0], inv[1], inv[2]);
+            osg::Vec3d orign_d((double)_origin.x(), (double)_origin.y(), (double)_origin.z());
+            if (_applyMatrix)  v = (_isNormal) ? (v * _m) - orign_d : v * _m;
+
+            //Setting 10-digit Significant Number
+            _fout.precision(10);
+            _fout << v[0] << ' ' << v[1] << ' ' << v[2];
+        }
+
     private:
 
         ValueVisitor& operator = (const ValueVisitor&) { return *this; }