diff --git a/rfx.go b/rfx.go
index 90cc6c0..a0ec788 100644
--- a/rfx.go
+++ b/rfx.go
@@ -77,14 +77,12 @@ func (r *rfx) Append(items ...any) R {
 	}
 
 	target := r.getParentValue()
-	for target.Kind() == reflect.Ptr || target.Kind() == reflect.Interface {
-		if target.IsNil() {
-			panic(ErrAppendNilValue)
-		}
-		target = target.Elem()
-	}
+	target = deref(target)
 
-	if !target.IsValid() || target.Kind() != reflect.Slice {
+	if !target.IsValid() {
+		panic(ErrAppendNilValue)
+	}
+	if target.Kind() != reflect.Slice {
 		panic(ErrAppendNotSupported)
 	}
 
@@ -106,15 +104,9 @@ func (r *rfx) Append(items ...any) R {
 // setNestedValue 递归设置嵌套值,特殊处理 map 中的 struct
 func (r *rfx) setNestedValue(current reflect.Value, keys []string, v any) error {
 	// 解引用指针和接口
-	for current.Kind() == reflect.Ptr || current.Kind() == reflect.Interface {
-		if current.IsNil() {
-			return ErrNilPointerInPath
-		}
-		current = current.Elem()
-	}
-
+	current = derefWithAccessor(current)
 	if !current.IsValid() {
-		return ErrInvalidValueInPath
+		return ErrNilPointerInPath
 	}
 
 	// 如果只剩一个键,直接设置
@@ -202,11 +194,9 @@ func (r *rfx) getParentValue(p ...string) reflect.Value {
 // setFieldValue 设置字段值的辅助方法
 // 返回 error 包含详细的设置失败信息
 func (r *rfx) setFieldValue(target reflect.Value, key string, v any) error {
-	for target.Kind() == reflect.Ptr || target.Kind() == reflect.Interface {
-		if target.IsNil() {
-			return ErrTargetNilPointer
-		}
-		target = target.Elem()
+	target = deref(target)
+	if !target.IsValid() {
+		return ErrTargetNilPointer
 	}
 
 	switch target.Kind() {
diff --git a/rfx_nested_r_test.go b/rfx_nested_r_test.go
new file mode 100644
index 0000000..0bf278e
--- /dev/null
+++ b/rfx_nested_r_test.go
@@ -0,0 +1,189 @@
+package reflux
+
+import (
+	"testing"
+)
+
+// TestNestedRInMap 测试在 map 中嵌套 R 对象的情况
+func TestNestedRInMap(t *testing.T) {
+	// 创建一个嵌套的 R 对象
+	inner := New(map[string]any{
+		"X": map[string]any{
+			"XX": "value",
+		},
+	})
+
+	// 将 R 对象嵌入到 map 中
+	outer := New(map[string]any{
+		"A": inner,
+	})
+
+	// 尝试通过路径访问
+	result := outer.Get("A", "X", "XX").String()
+	if result != "value" {
+		t.Errorf("Expected 'value', got '%s'", result)
+	}
+
+	// 尝试通过点号路径访问
+	result2 := outer.Get("A.X.XX").String()
+	if result2 != "value" {
+		t.Errorf("Expected 'value', got '%s'", result2)
+	}
+}
+
+// TestNestedRSetInMap 测试在包含 R 对象的 map 中设置值
+func TestNestedRSetInMap(t *testing.T) {
+	inner := New(map[string]any{
+		"X": map[string]any{
+			"XX": "old_value",
+		},
+	})
+
+	outer := New(map[string]any{
+		"A": inner,
+	})
+
+	// 尝试通过路径设置值
+	outer.Set("A.X.XX", "new_value")
+
+	result := outer.Get("A.X.XX").String()
+	if result != "new_value" {
+		t.Errorf("Expected 'new_value', got '%s'", result)
+	}
+}
+
+// TestNestedRInStruct 测试在 struct 中嵌套 R 对象
+func TestNestedRInStruct(t *testing.T) {
+	type Container struct {
+		Data R
+	}
+
+	inner := New(map[string]any{
+		"Name": "Alice",
+		"Age":  30,
+	})
+
+	container := Container{Data: inner}
+	outer := New(&container)
+
+	// 通过路径访问
+	name := outer.Get("Data", "Name").String()
+	if name != "Alice" {
+		t.Errorf("Expected 'Alice', got '%s'", name)
+	}
+
+	// 通过点号路径访问
+	age := outer.Get("Data.Age").Int()
+	if age != 30 {
+		t.Errorf("Expected 30, got %d", age)
+	}
+
+	// 设置值
+	outer.Set("Data.Name", "Bob")
+	newName := outer.Get("Data.Name").String()
+	if newName != "Bob" {
+		t.Errorf("Expected 'Bob', got '%s'", newName)
+	}
+}
+
+// TestNestedRInSlice 测试在 slice 中嵌套 R 对象
+func TestNestedRInSlice(t *testing.T) {
+	r1 := New(map[string]any{"id": 1, "name": "Alice"})
+	r2 := New(map[string]any{"id": 2, "name": "Bob"})
+
+	outer := New(map[string]any{
+		"items": []any{r1, r2},
+	})
+
+	// 访问 slice 中的 R 对象
+	name1 := outer.Get("items", "0", "name").String()
+	if name1 != "Alice" {
+		t.Errorf("Expected 'Alice', got '%s'", name1)
+	}
+
+	name2 := outer.Get("items.1.name").String()
+	if name2 != "Bob" {
+		t.Errorf("Expected 'Bob', got '%s'", name2)
+	}
+
+	// 设置值
+	outer.Set("items.0.name", "Charlie")
+	newName := outer.Get("items.0.name").String()
+	if newName != "Charlie" {
+		t.Errorf("Expected 'Charlie', got '%s'", newName)
+	}
+}
+
+// TestDeepNestedR 测试深度嵌套的 R 对象
+func TestDeepNestedR(t *testing.T) {
+	level3 := New(map[string]any{
+		"value": "deep",
+	})
+
+	level2 := New(map[string]any{
+		"level3": level3,
+	})
+
+	level1 := New(map[string]any{
+		"level2": level2,
+	})
+
+	outer := New(map[string]any{
+		"level1": level1,
+	})
+
+	// 深度路径访问
+	value := outer.Get("level1", "level2", "level3", "value").String()
+	if value != "deep" {
+		t.Errorf("Expected 'deep', got '%s'", value)
+	}
+
+	// 深度路径设置
+	outer.Set("level1.level2.level3.value", "updated")
+	newValue := outer.Get("level1.level2.level3.value").String()
+	if newValue != "updated" {
+		t.Errorf("Expected 'updated', got '%s'", newValue)
+	}
+}
+
+// TestNestedRExists 测试 Exists 方法对嵌套 R 对象的支持
+func TestNestedRExists(t *testing.T) {
+	inner := New(map[string]any{
+		"X": map[string]any{
+			"XX": "value",
+		},
+	})
+
+	outer := New(map[string]any{
+		"A": inner,
+	})
+
+	if !outer.Exists("A", "X", "XX") {
+		t.Error("Expected A.X.XX to exist")
+	}
+
+	if outer.Exists("A", "X", "YY") {
+		t.Error("Expected A.X.YY to not exist")
+	}
+}
+
+// TestNestedRArray 测试 Array 方法
+func TestNestedRArray(t *testing.T) {
+	r1 := New(map[string]any{"id": 1})
+	r2 := New(map[string]any{"id": 2})
+
+	outer := New(map[string]any{
+		"items": []any{r1, r2},
+	})
+
+	items := outer.Get("items").Array()
+	if len(items) != 2 {
+		t.Errorf("Expected 2 items, got %d", len(items))
+	}
+
+	// 验证数组元素可以访问
+	id1 := items[0].Get("id").Int()
+	if id1 != 1 {
+		t.Errorf("Expected id 1, got %d", id1)
+	}
+}
diff --git a/util.go b/util.go
index 8797a50..027d4ef 100644
--- a/util.go
+++ b/util.go
@@ -13,12 +13,7 @@ import (
 // DeepClone 深度克隆一个 reflect.Value
 func DeepClone(v reflect.Value) reflect.Value {
 	// 解引用指针和接口以获取实际值
-	for v.Kind() == reflect.Ptr || v.Kind() == reflect.Interface {
-		if v.IsNil() {
-			return reflect.Value{}
-		}
-		v = v.Elem()
-	}
+	v = deref(v)
 
 	if !v.IsValid() {
 		return reflect.Value{}
@@ -48,6 +43,19 @@ func CloneValue(dst, src reflect.Value) {
 		if src.IsNil() {
 			return
 		}
+
+		// 解引用 Accessor,克隆其底层值
+		unwrapped := unwrapAccessor(src)
+		if unwrapped != src {
+			// 是 Accessor,克隆底层值
+			cloned := DeepClone(unwrapped)
+			if cloned.IsValid() {
+				dst.Set(cloned)
+			}
+			return
+		}
+
+		// 不是 Accessor,正常克隆
 		cloned := DeepClone(src.Elem())
 		if cloned.IsValid() {
 			dst.Set(cloned)
@@ -104,6 +112,13 @@ func cloneSequence(dst, src reflect.Value) {
 func cloneElement(elem reflect.Value) reflect.Value {
 	// 首先检查 elem 自身是否是 interface
 	if elem.Kind() == reflect.Interface && !elem.IsNil() {
+		// 检查并解引用 Accessor
+		unwrapped := unwrapAccessor(elem)
+		if unwrapped != elem {
+			// 是 Accessor,克隆底层值
+			return DeepClone(unwrapped)
+		}
+
 		// 获取 interface 包装的实际值
 		wrapped := elem.Elem()
 
@@ -173,6 +188,49 @@ func needsDeepClone(kind reflect.Kind) bool {
 		kind == reflect.Array
 }
 
+// unwrapAccessor 解引用 valuex.Accessor (包括 R),返回其底层值
+// 如果 v 不是 interface 或不包含 Accessor,返回原值
+func unwrapAccessor(v reflect.Value) reflect.Value {
+	if v.Kind() == reflect.Interface && !v.IsNil() {
+		if accessor, ok := v.Interface().(valuex.Accessor); ok {
+			rawVal := accessor.Raw()
+			if rawVal.IsValid() {
+				return rawVal
+			}
+		}
+	}
+	return v
+}
+
+// derefValue 递归解引用指针和接口,返回实际值
+// nilValue: 遇到 nil 时返回的值
+// supportAccessor: 是否支持解引用 Accessor
+func derefValue(v reflect.Value, nilValue reflect.Value, supportAccessor bool) reflect.Value {
+	for v.Kind() == reflect.Ptr || v.Kind() == reflect.Interface {
+		if v.IsNil() {
+			return nilValue
+		}
+		if supportAccessor {
+			v = unwrapAccessor(v)
+			if v.Kind() != reflect.Ptr && v.Kind() != reflect.Interface {
+				break
+			}
+		}
+		v = v.Elem()
+	}
+	return v
+}
+
+// deref 递归解引用指针和接口,返回实际值(nil 时返回无效值)
+func deref(v reflect.Value) reflect.Value {
+	return derefValue(v, reflect.Value{}, false)
+}
+
+// derefWithAccessor 递归解引用指针和接口(支持 Accessor),返回实际值(nil 时返回无效值)
+func derefWithAccessor(v reflect.Value) reflect.Value {
+	return derefValue(v, reflect.Value{}, true)
+}
+
 // expandPath 展开路径,支持点号分割
 // 例如: expandPath("a.b", "c") -> []string{"a", "b", "c"}
 func expandPath(p ...string) []string {
@@ -194,12 +252,7 @@ func expandPath(p ...string) []string {
 // 1. 多个参数: Get("Address", "City")
 // 2. 点号分割: Get("Address.City") 或混合使用 Get("Address.City", "ZipCode")
 func getValueByPath(v reflect.Value, p ...string) reflect.Value {
-	for v.Kind() == reflect.Ptr || v.Kind() == reflect.Interface {
-		if v.IsNil() {
-			return reflect.Value{}
-		}
-		v = v.Elem()
-	}
+	v = derefWithAccessor(v)
 
 	// 展开所有路径片段,支持点号分割
 	keys := expandPath(p...)
@@ -227,12 +280,7 @@ func getValueByPath(v reflect.Value, p ...string) reflect.Value {
 		}
 
 		// 解引用指针和接口
-		for v.IsValid() && (v.Kind() == reflect.Ptr || v.Kind() == reflect.Interface) {
-			if v.IsNil() {
-				return reflect.Value{}
-			}
-			v = v.Elem()
-		}
+		v = derefWithAccessor(v)
 	}
 
 	return v