diff --git a/modules/git/repo_stats_custom.go b/modules/git/repo_stats_custom.go
index 95f1086ad..50a740fb0 100644
--- a/modules/git/repo_stats_custom.go
+++ b/modules/git/repo_stats_custom.go
@@ -13,6 +13,7 @@ import (
 type RepoKPIStats struct {
 	Contributors        int64
 	KeyContributors     int64
+	DevelopAge          int64
 	ContributorsAdded   int64
 	CommitsAdded        int64
 	CommitLinesModified int64
@@ -66,6 +67,10 @@ func GetRepoKPIStats(repoPath string) (*RepoKPIStats, error) {
 
 	}
 
+	err = setDevelopAge(repoPath, stats)
+	if err != nil {
+		return nil, fmt.Errorf("FillFromGit: %v", err)
+	}
 	err = setRepoKPIStats(repoPath, fourMonthAgo, stats, newContributersDict)
 
 	if err != nil {
@@ -75,6 +80,27 @@ func GetRepoKPIStats(repoPath string) (*RepoKPIStats, error) {
 
 }
 
+func setDevelopAge(repoPath string, stats *RepoKPIStats) error {
+	args := []string{"log", "--no-merges", "--branches=*", "--format=%cd", "--date=short"}
+	stdout, err := NewCommand(args...).RunInDirBytes(repoPath)
+	if err != nil {
+		return err
+	}
+	scanner := bufio.NewScanner(bytes.NewReader(stdout))
+	scanner.Split(bufio.ScanLines)
+	developMonth := make(map[string]struct{})
+	for scanner.Scan() {
+		l := strings.TrimSpace(scanner.Text())
+		month := l[0:strings.LastIndex(l, "-")]
+		if _, ok := developMonth[month]; !ok {
+			developMonth[month] = struct{}{}
+		}
+	}
+
+	stats.DevelopAge = int64(len(developMonth))
+	return nil
+}
+
 //获取一天内的用户贡献指标
 func GetUserKPIStats(repoPath string) (map[string]*UserKPIStats, error) {
 	timeUntil := time.Now()