diff --git a/backend/services/data-management-service/src/main/java/com/datamate/datamanagement/interfaces/converter/DatasetConverter.java b/backend/services/data-management-service/src/main/java/com/datamate/datamanagement/interfaces/converter/DatasetConverter.java
index faa668f7..2982b49a 100644
--- a/backend/services/data-management-service/src/main/java/com/datamate/datamanagement/interfaces/converter/DatasetConverter.java
+++ b/backend/services/data-management-service/src/main/java/com/datamate/datamanagement/interfaces/converter/DatasetConverter.java
@@ -78,7 +78,7 @@ default Map<String, Map<String, Long>> getDistribution(List<DatasetFile> dataset
         for (DatasetFile datasetFile : datasetFiles) {
             List<FileTag> tags = datasetFile.analyzeTag();
             if (CollectionUtils.isEmpty(tags)) {
-                return distribution;
+                continue;
             }
             for (FileTag tag : tags) {
                 Map<String, Long> tagValueMap = distribution.getOrDefault(tag.getFromName(), new HashMap<>());
diff --git a/frontend/src/pages/DataManagement/dataset.const.tsx b/frontend/src/pages/DataManagement/dataset.const.tsx
index a2bc1f0e..d5b70901 100644
--- a/frontend/src/pages/DataManagement/dataset.const.tsx
+++ b/frontend/src/pages/DataManagement/dataset.const.tsx
@@ -17,6 +17,7 @@ import {
   FileImage,
   FileText,
   Video,
+  Film,
   FileCode,
   MessageCircleMore,
   ImagePlus,
@@ -45,7 +46,7 @@ export const datasetTypeMap: Record<
     label: "文本",
     order: 1,
     icon: ScanText,
-    iconColor: "blue",
+    iconColor: "#A78BFA",
     children: [
       DatasetSubType.TEXT_DOCUMENT,
       DatasetSubType.TEXT_WEB,
@@ -58,7 +59,7 @@ export const datasetTypeMap: Record<
     label: "图像",
     order: 2,
     icon: Image,
-    iconColor: "green",
+    iconColor: "#38BDF8",
     children: [DatasetSubType.IMAGE_IMAGE, DatasetSubType.IMAGE_CAPTION],
     description: "用于处理和分析图像数据的数据集",
   },
@@ -67,7 +68,7 @@ export const datasetTypeMap: Record<
     label: "音频",
     order: 3,
     icon: Music,
-    iconColor: "orange",
+    iconColor: "#F59E0B",
     children: [DatasetSubType.AUDIO_AUDIO, DatasetSubType.AUDIO_JSONL],
     description: "用于处理和分析音频数据的数据集",
   },
@@ -75,8 +76,8 @@ export const datasetTypeMap: Record<
     value: DatasetType.VIDEO,
     label: "视频",
     order: 3,
-    icon: Video,
-    iconColor: "purple",
+    icon: Film,
+    iconColor: "#22D3EE",
     children: [DatasetSubType.VIDEO_VIDEO, DatasetSubType.VIDEO_JSONL],
     description: "用于处理和分析视频数据的数据集",
   },
@@ -206,6 +207,7 @@ export function mapDataset(dataset: AnyObject): Dataset {
     createdAt: formatDateTime(dataset.createdAt) || "--",
     updatedAt: formatDateTime(dataset?.updatedAt) || "--",
     icon: IconComponent ? <IconComponent className="w-full h-full" /> : <Database />,
+    iconColor: iconColor,
     status: datasetStatusMap[dataset.status],
     statistics: [
       { label: "文件数", value: dataset.fileCount || 0 },
diff --git a/frontend/src/pages/RatioTask/Create/CreateRatioTask.tsx b/frontend/src/pages/RatioTask/Create/CreateRatioTask.tsx
index 5598f011..67b40c76 100644
--- a/frontend/src/pages/RatioTask/Create/CreateRatioTask.tsx
+++ b/frontend/src/pages/RatioTask/Create/CreateRatioTask.tsx
@@ -7,6 +7,7 @@ import { useNavigate } from "react-router";
 import SelectDataset from "@/pages/RatioTask/Create/components/SelectDataset.tsx";
 import BasicInformation from "@/pages/RatioTask/Create/components/BasicInformation.tsx";
 import RatioConfig from "@/pages/RatioTask/Create/components/RatioConfig.tsx";
+import {formatDate} from "@/utils/unit.ts";
 
 export default function CreateRatioTask() {
   const navigate = useNavigate();
@@ -37,10 +38,11 @@ export default function CreateRatioTask() {
       }
       const totals = String(values.totalTargetCount);
       const config = ratioTaskForm.ratioConfigs.map((c) => {
+        const dateRange = c.dateRange ? [formatDate(c.dateRange[0]), formatDate(c.dateRange[1])] : []
         return {
           datasetId: c.source,
           counts: String(c.quantity ?? 0),
-          filterConditions: { label: c.labelFilter, dateRange: String(c.dateRange ?? 0)},
+          filterConditions: { label: c.labelFilter, dateRange: dateRange},
         };
       });
 
diff --git a/frontend/src/pages/RatioTask/Create/components/RatioConfig.tsx b/frontend/src/pages/RatioTask/Create/components/RatioConfig.tsx
index fcb58d21..23c438cb 100644
--- a/frontend/src/pages/RatioTask/Create/components/RatioConfig.tsx
+++ b/frontend/src/pages/RatioTask/Create/components/RatioConfig.tsx
@@ -6,6 +6,7 @@ import {
   Select,
   Table,
   InputNumber,
+  DatePicker
 } from "antd";
 import { BarChart3 } from "lucide-react";
 import type { Dataset } from "@/pages/DataManagement/dataset.model.ts";
@@ -31,7 +32,7 @@ interface RatioConfigItem {
   percentage: number;
   source: string; // dataset id
   labelFilter?: LabelFilter;
-  dateRange?: number;
+  dateRange?: [Date | null, Date | null] | null;
 }
 
 interface RatioConfigProps {
@@ -303,20 +304,18 @@ const RatioConfig: FC<RatioConfigProps> = ({
                   title: "标签更新时间",
                   dataIndex: "dateRange",
                   key: "dateRange",
-                  render: (_: any, record: RatioConfigItem) => (
-                    <Select
-                      style={{ width: "140px" }}
-                      placeholder="选择标签更新时间"
-                      value={record.dateRange}
-                      options={TIME_RANGE_OPTIONS}
-                      allowClear
-                      onChange={(value) =>
-                        updateConfig(record.id, {
-                          dateRange: value || undefined,
-                        })
-                      }
-                    />
-                  ),
+                  render: (_: any, record: RatioConfigItem) => {
+                    return (
+                      <DatePicker.RangePicker
+                        value={record.dateRange as any}
+                        onChange={(date) => {
+                          updateConfig(record.id, { dateRange: date });
+                        }}
+                        placeholder={["开始时间", "结束时间"]}
+                        allowClear
+                      />
+                    );
+                  },
                 },
                 {
                   title: "数量",
diff --git a/runtime/datamate-python/app/module/ratio/schema/ratio_task.py b/runtime/datamate-python/app/module/ratio/schema/ratio_task.py
index 5e4791eb..abec72f1 100644
--- a/runtime/datamate-python/app/module/ratio/schema/ratio_task.py
+++ b/runtime/datamate-python/app/module/ratio/schema/ratio_task.py
@@ -12,20 +12,25 @@ class LabelFilter(BaseModel):
     value: Optional[str] = Field(None, description="标签值")
 
 class FilterCondition(BaseModel):
-    date_range: Optional[str] = Field(None, description="数据范围", alias="dateRange")
+    date_range: Optional[List[str]] = Field(None, description="数据范围", alias="dateRange")
     label: Optional[LabelFilter] = Field(None, description="标签")
 
     @field_validator("date_range")
     @classmethod
-    def validate_date_range(cls, v: Optional[str]) -> Optional[str]:
-        # ensure it's a numeric string if provided
-        if not v:
-            return v
+    def validate_date_range(cls, date_range: Optional[List[str]]) -> Optional[List[str]]:
+        # ensure it's a date range if provided
+        if not date_range or len(date_range) == 0:
+            return date_range
+        if len(date_range) != 2:
+            raise ValueError("date_range must be a list of two date strings: [start, end]")
         try:
-            int(v)
-            return v
+            start = datetime.fromisoformat(date_range[0])
+            end = datetime.fromisoformat(date_range[1])
+            if start > end:
+                raise ValueError("date_range start must be earlier than or equal to end")
+            return date_range
         except (ValueError, TypeError) as e:
-            raise ValueError("date_range must be a numeric string")
+            raise ValueError("date_range items must be ISO date strings (e.g. YYYY-MM-DD)")
 
     class Config:
         # allow population by field name when constructing model programmatically
diff --git a/runtime/datamate-python/app/module/ratio/service/ratio_task.py b/runtime/datamate-python/app/module/ratio/service/ratio_task.py
index b8899b54..10247dab 100644
--- a/runtime/datamate-python/app/module/ratio/service/ratio_task.py
+++ b/runtime/datamate-python/app/module/ratio/service/ratio_task.py
@@ -271,14 +271,13 @@ def _filter_file(file: DatasetFiles, conditions: FilterCondition) -> bool:
         logger.info(f"start filter file: {file}, conditions: {conditions}")
 
         # Check data range condition if provided
-        if conditions.date_range:
+        if conditions.date_range and len(conditions.date_range) == 2:
             try:
                 from datetime import datetime, timedelta
-                data_range_days = int(conditions.date_range)
-                if data_range_days > 0:
-                    cutoff_date = datetime.now() - timedelta(days=data_range_days)
-                    if file.tags_updated_at and file.tags_updated_at < cutoff_date:
-                        return False
+                start_at = datetime.fromisoformat(conditions.date_range[0])
+                end_at = datetime.fromisoformat(conditions.date_range[1])
+                if file.tags_updated_at and (file.tags_updated_at < start_at or file.tags_updated_at > end_at):
+                    return False
             except (ValueError, TypeError) as e:
                 logger.warning(f"Invalid data_range value: {conditions.date_range}", e)
                 return False
@@ -294,7 +293,7 @@ def _filter_file(file: DatasetFiles, conditions: FilterCondition) -> bool:
                 for tag in all_tags:
                     if conditions.label.label and tag.get("label") != conditions.label.label:
                         continue
-                    if conditions.label.value is None:
+                    if conditions.label.value is None or len(conditions.label.value) == 0:
                         return True
                     if tag.get("value") == conditions.label.value:
                         return True