diff --git a/platformapi/baidunavi/baidunavi.go b/platformapi/baidunavi/baidunavi.go
new file mode 100644
index 00000000..20fde070
--- /dev/null
+++ b/platformapi/baidunavi/baidunavi.go
@@ -0,0 +1,168 @@
+package baidunavi
+
+import (
+	"crypto/md5"
+	"fmt"
+	"net/http"
+	"net/url"
+	"sort"
+	"strings"
+
+	"git.rosy.net.cn/baseapi/platformapi"
+	"git.rosy.net.cn/baseapi/utils"
+)
+
+const (
+	signKey   = "sn"
+	resultKey = "result"
+	prodURL   = "http://api.map.baidu.com"
+)
+
+const (
+	StatusCodeSuccess                    = 0
+	StatusCodeInternalErr                = 1   // 服务器内部错误
+	StatusCodeExceedDailyQuota           = 301 // 永久配额超限，限制访问
+	StatusCodeExceedQuota                = 302 // 天配额超限，限制访问
+	StatusCodeExceedDailyConcurrentQuota = 401 // 当前并发量已经超过约定并发配额，限制访问
+	StatusCodeExceedConcurrentQuota      = 402 // 当前并发量已经超过约定并发配额，并且服务总并发量也已经超过设定的总并发配额，限制访问
+)
+
+const (
+	CoordSysWGS84 = 1 // GPS设备获取的角度坐标，WGS84坐标
+	CoordSysGCJ02 = 3 // google地图、soso地图、aliyun地图、mapabc地图和amap地图所用坐标，国测局（GCJ02）坐标
+	CoordSysBaiDu = 5 // 百度地图采用的经纬度坐标
+)
+
+const (
+	MaxCoordsConvBatchSize = 100
+)
+
+var (
+	exceedLimitCodes = map[int]int{
+		StatusCodeExceedDailyQuota:           1,
+		StatusCodeExceedQuota:                1,
+		StatusCodeExceedDailyConcurrentQuota: 1,
+		StatusCodeExceedConcurrentQuota:      1,
+	}
+
+	canRetryCodes = map[int]int{
+		StatusCodeInternalErr: 1,
+	}
+)
+
+type Coordinate struct {
+	Lng float64 `json:"x"`
+	Lat float64 `json:"y"`
+}
+
+type API struct {
+	client *http.Client
+	config *platformapi.APIConfig
+	ak     string
+	sk     string
+}
+
+func New(ak, sk string, config ...*platformapi.APIConfig) *API {
+	curConfig := platformapi.DefAPIConfig
+	if len(config) > 0 {
+		curConfig = *config[0]
+	}
+	return &API{
+		ak:     ak,
+		sk:     sk,
+		client: &http.Client{Timeout: curConfig.ClientTimeout},
+		config: &curConfig,
+	}
+}
+
+func (a *API) signParams(apiStr string, mapData map[string]interface{}) string {
+	keys := make([]string, 0)
+	for k := range mapData {
+		if k != signKey {
+			keys = append(keys, k)
+		}
+	}
+	sort.Strings(keys)
+
+	strList := []string{}
+	for _, k := range keys {
+		strList = append(strList, k+"="+url.QueryEscape(fmt.Sprint(mapData[k])))
+	}
+	finalStr := "/" + apiStr + "?" + strings.Join(strList, "&") + a.sk
+	// baseapi.SugarLogger.Debugf("sign str:%v", finalStr)
+	finalStr = url.QueryEscape(finalStr)
+	return fmt.Sprintf("%x", md5.Sum([]byte(finalStr)))
+}
+
+func genGetURL(baseURL, apiStr string, params map[string]interface{}) string {
+	keys := make([]string, 0)
+	for k := range params {
+		if k != signKey {
+			keys = append(keys, k)
+		}
+	}
+	sort.Strings(keys)
+
+	strList := []string{}
+	for _, k := range keys {
+		strList = append(strList, k+"="+url.QueryEscape(fmt.Sprint(params[k])))
+	}
+	strList = append(strList, signKey+"="+url.QueryEscape(fmt.Sprint(params[signKey])))
+	queryString := "?" + strings.Join(strList, "&")
+	if apiStr != "" {
+		return baseURL + "/" + apiStr + queryString
+	}
+	return baseURL + queryString
+}
+
+func (a *API) AccessAPI(apiStr string, params map[string]interface{}) (retVal interface{}, err error) {
+	apiStr += "/"
+	params2 := utils.MergeMaps(utils.Params2Map("ak", a.ak, "output", "json"), params)
+	params2[signKey] = a.signParams(apiStr, params2)
+
+	err = platformapi.AccessPlatformAPIWithRetry(a.client,
+		func() *http.Request {
+			request, _ := http.NewRequest(http.MethodGet, genGetURL(prodURL, apiStr, params2), nil)
+			return request
+		},
+		a.config,
+		func(response *http.Response, bodyStr string, jsonResult1 map[string]interface{}) (errLevel string, err error) {
+			if jsonResult1 == nil {
+				return platformapi.ErrLevelRecoverableErr, fmt.Errorf("mapData is nil")
+			}
+			status := int(utils.MustInterface2Int64(jsonResult1["status"]))
+			if status == StatusCodeSuccess {
+				retVal = jsonResult1[resultKey]
+				return platformapi.ErrLevelSuccess, nil
+			}
+			newErr := utils.NewErrorIntCode(utils.Interface2String(jsonResult1["message"]), status)
+			if _, ok := exceedLimitCodes[status]; ok {
+				return platformapi.ErrLevelExceedLimit, newErr
+			} else if _, ok := canRetryCodes[status]; ok {
+				return platformapi.ErrLevelRecoverableErr, newErr
+			} else {
+				return platformapi.ErrLevelCodeIsNotOK, newErr
+			}
+		})
+	return retVal, err
+}
+
+func (a *API) BatchCoordinateConvert(coords []*Coordinate, fromCoordSys, toCoordSys int) (outCoords []*Coordinate, err error) {
+	if fromCoordSys == toCoordSys {
+		return coords, nil
+	}
+	var coordsStrList []string
+	for _, v := range coords {
+		coordsStrList = append(coordsStrList, fmt.Sprintf("%.6f,%.6f", v.Lng, v.Lat))
+	}
+	params := map[string]interface{}{
+		"coords": strings.Join(coordsStrList, ";"),
+		"from":   fromCoordSys,
+		"to":     toCoordSys,
+	}
+	result, err := a.AccessAPI("geoconv/v1", params)
+	if err == nil {
+		err = utils.Map2StructByJson(result, &outCoords, false)
+	}
+	return outCoords, err
+}
diff --git a/platformapi/baidunavi/baidunavi_test.go b/platformapi/baidunavi/baidunavi_test.go
new file mode 100644
index 00000000..3b11f2f4
--- /dev/null
+++ b/platformapi/baidunavi/baidunavi_test.go
@@ -0,0 +1,41 @@
+package baidunavi
+
+import (
+	"testing"
+
+	"git.rosy.net.cn/baseapi"
+	"git.rosy.net.cn/baseapi/utils"
+
+	"go.uber.org/zap"
+)
+
+var (
+	api         *API
+	sugarLogger *zap.SugaredLogger
+)
+
+func init() {
+	logger, _ := zap.NewDevelopment()
+	sugarLogger = logger.Sugar()
+	baseapi.Init(sugarLogger)
+
+	api = New("eL94zToVOdGDTkNQxV8dnEQ1ZRcB2UKb", "ZG0OOpOsOVURUwAkkmoHQFKRCbzn0zGb")
+}
+
+func TestBatchCoordinateConvert(t *testing.T) {
+	result, err := api.BatchCoordinateConvert([]*Coordinate{
+		&Coordinate{
+			Lng: 104.057367,
+			Lat: 30.694686,
+		},
+		&Coordinate{
+			Lng: 104.057367,
+			Lat: 30.694686,
+		},
+	}, CoordSysGCJ02, CoordSysBaiDu)
+	if err != nil {
+		t.Fatalf("TestCoordinateConvert failed with error:%v", err)
+	} else {
+		t.Log(utils.Format4Output(result, false))
+	}
+}