diff --git a/compiler/circle-mpqsolver/src/MPQSolver.cpp b/compiler/circle-mpqsolver/src/MPQSolver.cpp
index 10cfbb65fb0..eea82efef0f 100644
--- a/compiler/circle-mpqsolver/src/MPQSolver.cpp
+++ b/compiler/circle-mpqsolver/src/MPQSolver.cpp
@@ -16,6 +16,9 @@
 
 #include "MPQSolver.h"
 
+#include <luci/ImporterEx.h>
+#include <iostream>
+
 using namespace mpqsolver;
 
 MPQSolver::MPQSolver(const std::string &input_data_path, float qerror_ratio,
@@ -23,9 +26,23 @@ MPQSolver::MPQSolver(const std::string &input_data_path, float qerror_ratio,
   : _input_data_path(input_data_path), _qerror_ratio(qerror_ratio),
     _input_quantization(input_quantization), _output_quantization(output_quantization)
 {
+  _quantizer = std::make_unique<core::Quantizer>(_input_quantization, _output_quantization);
 }
 
 void MPQSolver::set_save_intermediate(const std::string &save_path)
 {
   _hooks = std::make_unique<core::DumpingHooks>(save_path);
 }
+
+std::unique_ptr<luci::Module> MPQSolver::read_module(const std::string &path)
+{
+  luci::ImporterEx importerex;
+  auto module = importerex.importVerifyModule(path);
+  if (module.get() == nullptr)
+  {
+    std::cerr << "ERROR: Failed to load " << path << std::endl;
+    return nullptr;
+  }
+
+  return module;
+}
diff --git a/compiler/circle-mpqsolver/src/MPQSolver.h b/compiler/circle-mpqsolver/src/MPQSolver.h
index 6c5d25dad78..6718be2ea18 100644
--- a/compiler/circle-mpqsolver/src/MPQSolver.h
+++ b/compiler/circle-mpqsolver/src/MPQSolver.h
@@ -17,8 +17,11 @@
 #ifndef __MPQSOLVER_MPQSOLEVR_SOLVER_H__
 #define __MPQSOLVER_MPQSOLEVR_SOLVER_H__
 
+#include "core/Quantizer.h"
 #include <core/DumpingHooks.h>
 
+#include <luci/IR/CircleNodes.h>
+
 #include <memory>
 #include <string>
 
@@ -47,10 +50,14 @@ class MPQSolver
    */
   void set_save_intermediate(const std::string &save_path);
 
+protected:
+  std::unique_ptr<luci::Module> read_module(const std::string &path);
+
 protected:
   std::string _input_data_path;
   std::string _input_quantization;
   std::string _output_quantization;
+  std::unique_ptr<core::Quantizer> _quantizer;
   float _qerror_ratio = 0.f; // quantization error ratio
   std::unique_ptr<core::DumpingHooks> _hooks;
 };
diff --git a/compiler/circle-mpqsolver/src/bisection/BisectionSolver.cpp b/compiler/circle-mpqsolver/src/bisection/BisectionSolver.cpp
index 976dac55028..6272947ab2f 100644
--- a/compiler/circle-mpqsolver/src/bisection/BisectionSolver.cpp
+++ b/compiler/circle-mpqsolver/src/bisection/BisectionSolver.cpp
@@ -72,19 +72,6 @@ bool front_has_higher_error(const NodeDepthType &nodes_depth, const std::string
   return error_at_input > error_at_output;
 }
 
-std::unique_ptr<luci::Module> read_module(const std::string &path)
-{
-  luci::ImporterEx importerex;
-  auto module = importerex.importVerifyModule(path);
-  if (module.get() == nullptr)
-  {
-    std::cerr << "ERROR: Failed to load " << path << std::endl;
-    return nullptr;
-  }
-
-  return module;
-}
-
 } // namespace
 
 BisectionSolver::BisectionSolver(const std::string &input_data_path, float qerror_ratio,
@@ -92,7 +79,6 @@ BisectionSolver::BisectionSolver(const std::string &input_data_path, float qerro
                                  const std::string &output_quantization)
   : MPQSolver(input_data_path, qerror_ratio, input_quantization, output_quantization)
 {
-  _quantizer = std::make_unique<core::Quantizer>(_input_quantization, _output_quantization);
 }
 
 float BisectionSolver::evaluate(const core::DatasetEvaluator &evaluator,
diff --git a/compiler/circle-mpqsolver/src/bisection/BisectionSolver.h b/compiler/circle-mpqsolver/src/bisection/BisectionSolver.h
index 83851c0c853..1b73be98eac 100644
--- a/compiler/circle-mpqsolver/src/bisection/BisectionSolver.h
+++ b/compiler/circle-mpqsolver/src/bisection/BisectionSolver.h
@@ -17,7 +17,6 @@
 #ifndef __MPQSOLVER_BISECTION_SOLVER_H__
 #define __MPQSOLVER_BISECTION_SOLVER_H__
 
-#include <core/Quantizer.h>
 #include <core/Evaluator.h>
 #include <MPQSolver.h>
 
@@ -78,7 +77,6 @@ class BisectionSolver final : public MPQSolver
 private:
   float _qerror = 0.f; // quantization error
   Algorithm _algorithm = Algorithm::ForceQ16Front;
-  std::unique_ptr<core::Quantizer> _quantizer;
   std::string _visq_data_path;
 };