diff --git a/dongjian-dashboard-back-service/src/main/java/com/dongjian/dashboard/back/service/common/CommonOpt.java b/dongjian-dashboard-back-service/src/main/java/com/dongjian/dashboard/back/service/common/CommonOpt.java
index 4cec390..ae7dce7 100644
--- a/dongjian-dashboard-back-service/src/main/java/com/dongjian/dashboard/back/service/common/CommonOpt.java
+++ b/dongjian-dashboard-back-service/src/main/java/com/dongjian/dashboard/back/service/common/CommonOpt.java
@@ -159,11 +159,6 @@ public class CommonOpt {
 		return getAuroraInfoByApikey(paramMap);
 	}
 
-	public String buildAuroraJdbcUrl(String dbUrl, String auroraHost) {
-		String regex = "(jdbc:mysql://)([^/]+)(/data_center_aeon_admin.*)";
-		return dbUrl.replaceAll(regex, "$1" + auroraHost + "$3");
-	}
-
 	public String extractValue(ObjectMapper mapper, Long categoryId, String rawData) {
 		if (Constants.DEVICE_TYPE_TEMPERATURE_HUMIDITY.contains(categoryId)){
 			List<String> values = extractAllValues(mapper, rawData);
diff --git a/dongjian-dashboard-back-service/src/main/java/com/dongjian/dashboard/back/service/impl/DeviceDataBaStatusServiceImpl.java b/dongjian-dashboard-back-service/src/main/java/com/dongjian/dashboard/back/service/impl/DeviceDataBaStatusServiceImpl.java
index 4d1a553..5bb8fcc 100644
--- a/dongjian-dashboard-back-service/src/main/java/com/dongjian/dashboard/back/service/impl/DeviceDataBaStatusServiceImpl.java
+++ b/dongjian-dashboard-back-service/src/main/java/com/dongjian/dashboard/back/service/impl/DeviceDataBaStatusServiceImpl.java
@@ -31,9 +31,8 @@ import org.springframework.stereotype.Service;
 
 import java.net.URLDecoder;
 import java.nio.charset.StandardCharsets;
-import java.time.Instant;
-import java.time.LocalDate;
-import java.time.ZoneId;
+import java.time.*;
+import java.time.format.DateTimeFormatter;
 import java.util.*;
 import java.util.function.Function;
 import java.util.stream.Collectors;
@@ -235,10 +234,107 @@ public class DeviceDataBaStatusServiceImpl implements DeviceDataBaStatusService
 			lineData.setAttrCode(lineDataSearchParams.getAttrCodeList()[0]);
 			lineData.getYData().put("common", yCommon);
 
+			fillToEndOfDay(lineData);//补全24小时的算法
+
 			lineDataList.add(lineData);
 		}
 
 		return SimpleDataResponse.success(lineDataList);
 	}
 
+	public static void fillToEndOfDay(LineData lineData) {
+		DateTimeFormatter DF = Constants.FORMATTER_YMDHMS;
+
+		List<String> xData = lineData.getXData();
+		Map<String, List<Object>> yData = lineData.getYData();
+
+		// 至少 1 个点才能补
+		if (xData == null || xData.isEmpty()) {
+			return;
+		}
+
+		// 最后一个已有时间点
+		LocalDateTime lastTime = LocalDateTime.parse(
+				xData.get(xData.size() - 1), DF
+		);
+
+		LocalDate date = lastTime.toLocalDate();
+
+		// 当天 00:00
+		LocalDateTime startOfDay = date.atStartOfDay();
+
+		// 当天 24:00（次日 00:00）
+		LocalDateTime endOfDay = date.plusDays(1).atStartOfDay();
+
+		// 如果已经到 24 点，不补
+		if (!lastTime.isBefore(endOfDay)) {
+			return;
+		}
+
+		// 已有数据占据的时长（0 点 → 最后一个点）
+		long existSeconds = Duration.between(startOfDay, lastTime).getSeconds();
+		long daySeconds = Duration.between(startOfDay, endOfDay).getSeconds(); // 86400
+
+		if (existSeconds <= 0 || daySeconds <= 0) {
+			return;
+		}
+
+		int existCount = xData.size();
+
+		// 等比例推算全天应有点数
+		double ratio = (double) existSeconds / daySeconds;
+		int totalCount = (int) Math.ceil(existCount / ratio);
+		int appendCount = totalCount - existCount;
+
+		if (appendCount <= 0) {
+			return;
+		}
+
+		// 防止点数爆炸
+		int MAX_APPEND = 300;
+		appendCount = Math.min(appendCount, MAX_APPEND);
+
+		// 剩余可补时长
+		long appendSeconds = Duration.between(lastTime, endOfDay).getSeconds();
+
+		// 计算步长（兜底）
+		long stepSeconds = appendSeconds / appendCount;
+		if (stepSeconds <= 0) {
+			stepSeconds = appendSeconds;
+		}
+
+		LocalDateTime cursor = lastTime;
+		boolean appended = false;
+
+		// 按比例补点
+		for (int i = 0; i < appendCount; i++) {
+			cursor = cursor.plusSeconds(stepSeconds);
+
+			if (!cursor.isBefore(endOfDay)) {
+				break;
+			}
+
+			xData.add(cursor.format(DF));
+			appended = true;
+
+			for (List<Object> series : yData.values()) {
+				series.add(null);
+			}
+		}
+
+		// 保底：如果最后一个点仍然 < 23:59:59，强制补一个
+		LocalDateTime finalTime = LocalDateTime.parse(
+				xData.get(xData.size() - 1), DF
+		);
+
+		LocalDateTime lastSecondOfDay = endOfDay.minusSeconds(1);
+
+		if (finalTime.isBefore(lastSecondOfDay)) {
+			xData.add(lastSecondOfDay.format(DF));
+			for (List<Object> series : yData.values()) {
+				series.add(null);
+			}
+		}
+	}
+
 }