diff --git a/a8/csvreader.cc b/a8/csvreader.cc
deleted file mode 100644
index 61404bb..0000000
--- a/a8/csvreader.cc
+++ /dev/null
@@ -1,92 +0,0 @@
-#include <assert.h>
-
-#include <a8/a8.h>
-#include <a8/stringlist.h>
-#include <a8/csvreader.h>
-
-namespace a8
-{
-
-    CsvReader::CsvReader()
-    {
-    }
-
-    bool CsvReader::Load(const std::string& filename)
-    {
-        columns_.clear();
-        values_.clear();
-        currline_ = 0;
-        bool ret = stringlist_.LoadFromFile(filename.c_str());
-        if(ret){
-            if(NextLine()){
-                for(unsigned int i = 0;i < values_.size(); i++){
-                    columns_.insert(std::pair<std::string, int>(values_[i], i));
-                }
-            }
-        }
-        return ret;
-    }
-
-    bool CsvReader::NextLine()
-    {
-        if(currline_ >= stringlist_.Count()){
-            return false;
-        }
-        values_.clear();
-        std::string tmp_str = stringlist_.String(currline_);
-        const char *p  = tmp_str.c_str();
-        const char *pv = p;
-        //			printf("%s\n", p);
-        while(*p && p){
-            if(*p == ','){
-                if(p > pv){
-                    values_.push_back(std::string(pv, p - pv));
-                    //						printf("%s\n", std::string(pv, p - pv).c_str());
-                }else{
-                    values_.push_back("");
-                }
-                pv = p + 1;
-            }
-            p++;
-        }
-        if(p && *p  == ','){
-            values_.push_back("");
-        }else if(p > pv){
-            values_.push_back(std::string(pv, p - pv));
-        }
-        if(columns_.size() - values_.size() == 1){
-            values_.push_back("");
-        }
-        if(columns_.size() > 0){
-            assert(values_.size() >= columns_.size());
-        }
-        currline_++;
-        return true;
-    }
-
-    a8::XValue CsvReader::GetValue(const char* name)
-    {
-        std::map<std::string, int>::iterator itr = columns_.find(name);
-        if(itr != columns_.end()){
-            std::string decoestring = values_[itr->second];
-            a8::ReplaceString(decoestring, "\\n", "\n");
-            a8::ReplaceString(decoestring, "，", ",");
-            return a8::XValue(decoestring);
-        }else{
-            assert(false);
-            return a8::XValue("");
-        }
-    }
-
-    a8::XValue CsvReader::GetValue(const std::string& name)
-    {
-        return GetValue(name.c_str());
-    }
-
-    bool CsvReader::KeyExists(const std::string& name)
-    {
-        auto itr = columns_.find(name);
-        return itr != columns_.end();
-    }
-
-}
diff --git a/a8/csvreader.h b/a8/csvreader.h
deleted file mode 100644
index a7a2fc2..0000000
--- a/a8/csvreader.h
+++ /dev/null
@@ -1,23 +0,0 @@
-#pragma once
-
-namespace a8
-{
-    class CsvReader
-    {
-    public:
-        CsvReader();
-
-        bool Load(const std::string& filename);
-        bool NextLine();
-        a8::XValue GetValue(const char* name);
-        a8::XValue GetValue(const std::string& name);
-        bool KeyExists(const std::string& name);
-
-    private:
-        std::map<std::string, int> columns_;
-        std::vector<std::string> values_;
-
-        int currline_ = 0;
-        a8::StringList stringlist_;
-    };
-}