diff --git a/tools/pnnx/Releasenotes b/tools/pnnx/Releasenotes
index c4e432f1c9e..87a8167f2af 100644
--- a/tools/pnnx/Releasenotes
+++ b/tools/pnnx/Releasenotes
@@ -44,4 +44,7 @@ dev.1.0.12.20240529
 1. Add getInputType function in infer py
 
 dev.1.0.13.20240530
-1. Trans string to char in getInputType function 
\ No newline at end of file
+1. Trans string to char in getInputType function 
+
+dev.1.0.14.20240531
+1. Fix bug of make_index_expression for gen tensor.index infer op  
\ No newline at end of file
diff --git a/tools/pnnx/src/ir.cpp b/tools/pnnx/src/ir.cpp
index 9d7f9dc866e..e854fd381cb 100644
--- a/tools/pnnx/src/ir.cpp
+++ b/tools/pnnx/src/ir.cpp
@@ -1406,21 +1406,48 @@ static std::string make_index_expression(const Operator* op)
     std::string index_expr = op->params.at("expr").s;
 
     // strip out-most [ ] pair
-    index_expr = index_expr.substr(1, index_expr.size() - 2);
+    // index_expr = index_expr.substr(1, index_expr.size() - 2);
 
-    // None,None,   ->   ...,
-    bool leading_none = false;
+    // // None,None,   ->   ...,
+    // bool leading_none = false;
+    // while (index_expr.substr(0, 5) == "None,")
+    // {
+    //     leading_none = true;
+    //     index_expr = index_expr.substr(5);
+    // }
+    // if (leading_none)
+    // {
+    //     index_expr = "...," + index_expr;
+    // }
+
+    // return index_expr;
+    std::vector<int> shape = op->inputs.at(0)->shape;
+    std::string out_index_expr = "";
+    index_expr = index_expr.substr(1, index_expr.size() - 2);
+    int indices_index = 0;
     while (index_expr.substr(0, 5) == "None,")
     {
-        leading_none = true;
+      
         index_expr = index_expr.substr(5);
+        indices_index++;
     }
-    if (leading_none)
+    for(int i = 0; i < shape.size(); i++)
     {
-        index_expr = "...," + index_expr;
-    }
+        if ( i == indices_index)
+        {
+            out_index_expr = out_index_expr + index_expr;
 
-    return index_expr;
+        }else
+        {
+            out_index_expr =  out_index_expr + ":";
+            
+        }
+        if ( i != shape.size() - 1)
+        {
+             out_index_expr =  out_index_expr + ",";
+        }
+    }
+    return out_index_expr;
 }
 
 int Graph::python(const std::string& pypath, const std::string& pnnxbinpath)
diff --git a/tools/pnnx/src/py_proj.cpp b/tools/pnnx/src/py_proj.cpp
index c38159adb7c..db2661bbcc8 100644
--- a/tools/pnnx/src/py_proj.cpp
+++ b/tools/pnnx/src/py_proj.cpp
@@ -5,7 +5,7 @@
 // #include <torch/extension.h>
 #define STRINGIFY(x)       #x
 #define MACRO_STRINGIFY(x) STRINGIFY(x)
-#define MYLIBRARY_VERSION  "dev.1.0.13.20240530"
+#define MYLIBRARY_VERSION  "dev.1.0.14.20240531"
 using namespace pnnx_graph;
 using namespace pnnx_ir;
 namespace py = pybind11;