diff --git a/convert.go b/convert.go
index 3d9880eb..7cdedfae 100644
--- a/convert.go
+++ b/convert.go
@@ -2,15 +2,12 @@ package hrp
 
 import (
 	"bytes"
-	"encoding/csv"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
-	"path/filepath"
-	"strings"
-
 	"github.com/rs/zerolog/log"
 	"gopkg.in/yaml.v3"
+	"io/ioutil"
+	"path/filepath"
 )
 
 func (tc *TCase) Dump2JSON(path string) error {
@@ -96,36 +93,6 @@ func loadFromYAML(path string) (*TCase, error) {
 	return tc, err
 }
 
-func LoadFromCSV(path string) []map[string]string {
-	path, err := filepath.Abs(path)
-	if err != nil {
-		log.Error().Str("path", path).Err(err).Msg("convert absolute path failed")
-		panic(err)
-	}
-	log.Info().Str("path", path).Msg("load csv file")
-
-	file, err := ioutil.ReadFile(path)
-	if err != nil {
-		log.Error().Err(err).Msg("load csv file failed")
-		panic(err)
-	}
-	r := csv.NewReader(strings.NewReader(string(file)))
-	content, err := r.ReadAll()
-	if err != nil {
-		log.Error().Err(err).Msg("parse csv file failed")
-		panic(err)
-	}
-	var result []map[string]string
-	for i := 1; i < len(content); i++ {
-		row := make(map[string]string)
-		for j := 0; j < len(content[i]); j++ {
-			row[content[0][j]] = content[i][j]
-		}
-		result = append(result, row)
-	}
-	return result
-}
-
 func (tc *TCase) ToTestCase() (*TestCase, error) {
 	testCase := &TestCase{
 		Config: &Config{cfg: tc.Config},
diff --git a/internal/builtin/function.go b/internal/builtin/function.go
index be7c129e..3d5c96de 100644
--- a/internal/builtin/function.go
+++ b/internal/builtin/function.go
@@ -2,10 +2,14 @@ package builtin
 
 import (
 	"crypto/md5"
+	"encoding/csv"
 	"encoding/hex"
-	"github.com/httprunner/hrp"
+	"github.com/rs/zerolog/log"
+	"io/ioutil"
 	"math"
 	"math/rand"
+	"path/filepath"
+	"strings"
 	"time"
 )
 
@@ -15,8 +19,8 @@ var Functions = map[string]interface{}{
 	"gen_random_string": genRandomString, // call with one argument
 	"max":               math.Max,        // call with two arguments
 	"md5":               MD5,
-	"parameterize":      hrp.LoadFromCSV,
-	"P":                 hrp.LoadFromCSV,
+	"parameterize":      LoadFromCSV,
+	"P":                 LoadFromCSV,
 }
 
 func init() {
@@ -47,3 +51,33 @@ func MD5(str string) string {
 	hasher.Write([]byte(str))
 	return hex.EncodeToString(hasher.Sum(nil))
 }
+
+func LoadFromCSV(path string) []map[string]string {
+	path, err := filepath.Abs(path)
+	if err != nil {
+		log.Error().Str("path", path).Err(err).Msg("convert absolute path failed")
+		panic(err)
+	}
+	log.Info().Str("path", path).Msg("load csv file")
+
+	file, err := ioutil.ReadFile(path)
+	if err != nil {
+		log.Error().Err(err).Msg("load csv file failed")
+		panic(err)
+	}
+	r := csv.NewReader(strings.NewReader(string(file)))
+	content, err := r.ReadAll()
+	if err != nil {
+		log.Error().Err(err).Msg("parse csv file failed")
+		panic(err)
+	}
+	var result []map[string]string
+	for i := 1; i < len(content); i++ {
+		row := make(map[string]string)
+		for j := 0; j < len(content[i]); j++ {
+			row[content[0][j]] = content[i][j]
+		}
+		result = append(result, row)
+	}
+	return result
+}