diff --git a/backend/internal/handler/instance_detail.go b/backend/internal/handler/instance_detail.go
index 90fd0c1..3ff8106 100644
--- a/backend/internal/handler/instance_detail.go
+++ b/backend/internal/handler/instance_detail.go
@@ -663,6 +663,48 @@ func executeSQLQuery(instance *model.Instance, dbName string, sqlStr string, lim
 	}, nil
 }
 
+// parseCommandParts splits a command string into parts, respecting quoted strings.
+// e.g. HGET "my key" "my field" => ["HGET", "my key", "my field"]
+func parseCommandParts(input string) []string {
+	var parts []string
+	var current strings.Builder
+	inQuote := false
+	quoteChar := byte(0)
+
+	for i := 0; i < len(input); i++ {
+		ch := input[i]
+		if inQuote {
+			if ch == quoteChar {
+				inQuote = false
+				quoteChar = 0
+			} else {
+				current.WriteByte(ch)
+			}
+		} else {
+			switch ch {
+			case '"', '\'':
+				if current.Len() > 0 {
+					parts = append(parts, current.String())
+					current.Reset()
+				}
+				inQuote = true
+				quoteChar = ch
+			case ' ', '\t', '\n', '\r':
+				if current.Len() > 0 {
+					parts = append(parts, current.String())
+					current.Reset()
+				}
+			default:
+				current.WriteByte(ch)
+			}
+		}
+	}
+	if current.Len() > 0 {
+		parts = append(parts, current.String())
+	}
+	return parts
+}
+
 func executeRedisQuery(instance *model.Instance, dbSelect string, command string, limit int, offset int) (gin.H, error) {
 	// Parse Redis DB number from dbSelect (e.g. "0", "1")
 	redisDB := 0
@@ -680,7 +722,7 @@ func executeRedisQuery(instance *model.Instance, dbSelect string, command string
 
 	ctx := context.Background()
 
-	parts := strings.Fields(command)
+	parts := parseCommandParts(command)
 	if len(parts) == 0 {
 		return nil, fmt.Errorf("empty command")
 	}