diff --git a/internal/service/voiceroomrocket/mapper.go b/internal/service/voiceroomrocket/mapper.go
index e09973a..eedcc97 100644
--- a/internal/service/voiceroomrocket/mapper.go
+++ b/internal/service/voiceroomrocket/mapper.go
@@ -73,16 +73,16 @@ func pointerTimeValue(value *time.Time) time.Time {
 	return *value
 }
 
-func decimalPercent(current, need int64) (string, int) {
+func decimalPercent(current, need int64) (string, float64) {
 	if need <= 0 || current <= 0 {
 		return "0.0000", 0
 	}
-	percent := float64(current) * 100 / float64(need)
-	display := int(math.Floor(percent))
-	if display > 100 {
-		display = 100
+	if current >= need {
+		return "1.0000", 1
 	}
-	return fmt.Sprintf("%.4f", percent), display
+	// App 端按 0-1 比例换算百分比；截断而非四舍五入，避免未充满时提前显示 100%。
+	ratio := math.Floor(float64(current)/float64(need)*10000) / 10000
+	return fmt.Sprintf("%.4f", ratio), ratio
 }
 
 func parsePercent(value string) float64 {
diff --git a/internal/service/voiceroomrocket/types.go b/internal/service/voiceroomrocket/types.go
index d616f4f..5dde3eb 100644
--- a/internal/service/voiceroomrocket/types.go
+++ b/internal/service/voiceroomrocket/types.go
@@ -422,7 +422,7 @@ type StatusResponse struct {
 	CurrentEnergy          int64                 `json:"currentEnergy"`
 	NeedEnergy             int64                 `json:"needEnergy"`
 	EnergyPercent          string                `json:"energyPercent"`
-	DisplayPercent         int                   `json:"displayPercent"`
+	DisplayPercent         float64               `json:"displayPercent"`
 	LaunchCountdownSeconds int                   `json:"launchCountdownSeconds,omitempty"`
 	Shake                  bool                  `json:"shake"`
 	PreviewRocketURL       string                `json:"previewRocketUrl,omitempty"`
diff --git a/scripts/voice_room_rocket_local_verify.go b/scripts/voice_room_rocket_local_verify.go
index 20d49c9..1668d01 100644
--- a/scripts/voice_room_rocket_local_verify.go
+++ b/scripts/voice_room_rocket_local_verify.go
@@ -182,7 +182,7 @@ func main() {
 
 	mid, err := service.GetStatus(ctx, user, room.RoomID)
 	must(err, "mid status")
-	assert(mid.CurrentLevel == 1 && mid.CurrentEnergy == 60 && mid.DisplayPercent == 60, "mid status mismatch")
+	assert(mid.CurrentLevel == 1 && mid.CurrentEnergy == 60 && mid.DisplayPercent == 0.6, "mid status mismatch")
 
 	secondPayload := mqEnvelope(giftPayload("LOCAL_VERIFY_TRACK_2", igniteUserID, room.RoomID, 80, now.Add(time.Second)))
 	second, err := service.ProcessGiftPayload(ctx, secondPayload)