diff --git a/src/main/java/org/springblade/modules/martial/service/IMiniQueryService.java b/src/main/java/org/springblade/modules/martial/service/IMiniQueryService.java
new file mode 100644
index 0000000..25c7bda
--- /dev/null
+++ b/src/main/java/org/springblade/modules/martial/service/IMiniQueryService.java
@@ -0,0 +1,24 @@
+package org.springblade.modules.martial.service;
+
+import org.springblade.core.tool.api.R;
+import org.springblade.modules.martial.pojo.vo.MiniAthleteScoreVO;
+import org.springblade.modules.martial.pojo.vo.MiniScoreDetailVO;
+
+import java.util.List;
+
+/**
+ * Mini App Query Service
+ * Phase 1, Step 1.4.1: Extract query logic from controller
+ */
+public interface IMiniQueryService {
+    
+    /**
+     * Get athletes for scoring
+     */
+    R<List<MiniAthleteScoreVO>> getAthletes(Long projectId, Long venueId);
+    
+    /**
+     * Get score detail for athlete
+     */
+    R<MiniScoreDetailVO> getScoreDetail(Long athleteId);
+}