diff --git a/utils/README.md b/utils/README.md
index bf6ce2d1..543c3dd5 100644
--- a/utils/README.md
+++ b/utils/README.md
@@ -56,12 +56,26 @@ const uuid = Process("utils.str.UUID");
 const pinyin = Process("utils.str.Pinyin", "你好");
 // Returns: "ni hao"
 
-// With options
+// With tone marks
 const pinyinWithTone = Process("utils.str.Pinyin", "你好", {
   tone: true,
   separator: "-",
 });
+// Returns: "nǐ-hǎo"
+
+// With tone numbers
+const pinyinWithToneNumbers = Process("utils.str.Pinyin", "你好", {
+  tone: "number",
+  separator: "-",
+});
 // Returns: "ni3-hao3"
+
+// With multiple pronunciations for characters (heteronym mode)
+const pinyinWithHeteronym = Process("utils.str.Pinyin", "中国", {
+  heteronym: true,
+  tone: true,
+});
+// Returns: "zhōng|zhòng guó"
 ```
 
 #### Convert hex to string
diff --git a/utils/str/str.go b/utils/str/str.go
index 3e4351ff..971b8473 100644
--- a/utils/str/str.go
+++ b/utils/str/str.go
@@ -44,7 +44,8 @@ func ProcessUUID(process *process.Process) interface{} {
 //   - arg[0]: string, the Chinese characters to convert
 //   - arg[1]: map (optional) configuration options
 //     {
-//     "tone": bool,     // whether to include tone marks, default: false
+//     "tone": bool or string,  // true or "mark" for tone marks, "number" for numeric tones, false or "none" for no tones
+//     "heteronym": bool, // whether to return multiple pronunciations for characters, default: false
 //     "separator": string  // separator between pinyin, default: " "
 //     }
 func ProcessPinyin(process *process.Process) interface{} {
@@ -55,17 +56,39 @@ func ProcessPinyin(process *process.Process) interface{} {
 	a := pinyin.NewArgs()
 	a.Style = pinyin.Normal // default style
 	separator := " "        // default separator
+	useToneNumber := false  // flag to track if we need to convert to tone numbers
 
 	// Apply custom settings if provided
 	if process.NumOfArgs() > 1 {
 		confMap := process.ArgsMap(1, maps.MapStrAny{})
 
-		// Check if tone is enabled
+		// Check tone style
 		toneVal, hasTone := confMap["tone"]
-
 		if hasTone {
-			if tone, ok := toneVal.(bool); ok && tone {
-				a.Style = pinyin.Tone
+			// Handle different types of tone parameter
+			switch v := toneVal.(type) {
+			case bool:
+				// Boolean: true = mark tones, false = no tones
+				if v {
+					a.Style = pinyin.Tone
+				}
+			case string:
+				// String: "mark" = mark tones, "number" = numeric tones, "none" = no tones
+				switch v {
+				case "mark":
+					a.Style = pinyin.Tone
+				case "number":
+					a.Style = pinyin.Tone2
+					useToneNumber = true
+				}
+			}
+		}
+
+		// Check if heteronym is enabled
+		heteronymVal, hasHeteronym := confMap["heteronym"]
+		if hasHeteronym {
+			if heteronym, ok := heteronymVal.(bool); ok && heteronym {
+				a.Heteronym = true
 			}
 		}
 
@@ -78,14 +101,47 @@ func ProcessPinyin(process *process.Process) interface{} {
 	// Convert to Pinyin
 	result := pinyin.Pinyin(seed, a)
 
-	// Convert 2D array to 1D array
+	// Fix the tone number position if needed (to handle "ha3o" -> "hao3")
+	if useToneNumber {
+		for i, pys := range result {
+			for j, py := range pys {
+				// This is a hacky fix to move the tone number to the end
+				// since the library puts it after the vowel
+				result[i][j] = fixToneNumberPosition(py)
+			}
+		}
+	}
+
+	// Process the pinyin results
 	pinyinStr := make([]string, 0, len(result))
 	for _, py := range result {
 		if len(py) > 0 {
-			pinyinStr = append(pinyinStr, py[0])
+			if a.Heteronym && len(py) > 1 {
+				// For heteronyms, use a pipe separator between different pronunciations
+				charPinyins := strings.Join(py, "|")
+				pinyinStr = append(pinyinStr, charPinyins)
+			} else {
+				pinyinStr = append(pinyinStr, py[0])
+			}
 		}
 	}
 
 	final := strings.Join(pinyinStr, separator)
 	return final
 }
+
+// fixToneNumberPosition moves the tone number from after the vowel to the end of the syllable
+func fixToneNumberPosition(s string) string {
+	// Find the position of the first digit in the string
+	for i, c := range s {
+		if c >= '0' && c <= '9' {
+			// If the digit is at the end already, return as is
+			if i == len(s)-1 {
+				return s
+			}
+			// Move the digit to the end
+			return s[:i] + s[i+1:] + string(c)
+		}
+	}
+	return s // No digit found, return as is
+}
diff --git a/utils/str_test.go b/utils/str_test.go
index 94079a81..efb20673 100644
--- a/utils/str_test.go
+++ b/utils/str_test.go
@@ -57,14 +57,70 @@ func TestProcessPinyin(t *testing.T) {
 	res := process.New("utils.str.Pinyin", "你好世界").Run().(string)
 	assert.Equal(t, "ni hao shi jie", res)
 
-	// Test with tone enabled and custom separator
+	// Test with tone enabled (boolean true)
 	config := map[string]interface{}{
+		"tone": true,
+	}
+	res = process.New("utils.str.Pinyin", "你好世界", config).Run().(string)
+	assert.Equal(t, "nǐ hǎo shì jiè", res)
+
+	// Test with tone as string "mark"
+	config = map[string]interface{}{
+		"tone": "mark",
+	}
+	res = process.New("utils.str.Pinyin", "你好世界", config).Run().(string)
+	assert.Equal(t, "nǐ hǎo shì jiè", res)
+
+	// Test with tone as string "number"
+	config = map[string]interface{}{
+		"tone": "number",
+	}
+	res = process.New("utils.str.Pinyin", "你好世界", config).Run().(string)
+	assert.Equal(t, "ni3 hao3 shi4 jie4", res)
+
+	// Test with tone enabled (boolean true) and custom separator
+	config = map[string]interface{}{
 		"tone":      true,
 		"separator": "-",
 	}
 	res = process.New("utils.str.Pinyin", "你好世界", config).Run().(string)
 	assert.Equal(t, "nǐ-hǎo-shì-jiè", res)
 
+	// Test with tone "number" and custom separator
+	config = map[string]interface{}{
+		"tone":      "number",
+		"separator": "-",
+	}
+	res = process.New("utils.str.Pinyin", "你好世界", config).Run().(string)
+	assert.Equal(t, "ni3-hao3-shi4-jie4", res)
+
+	// Test with heteronym enabled
+	config = map[string]interface{}{
+		"heteronym": true,
+	}
+	res = process.New("utils.str.Pinyin", "中国", config).Run().(string)
+	assert.Contains(t, res, "zhong")
+	assert.Contains(t, res, "guo")
+
+	// Test with heteronym and tone enabled
+	config = map[string]interface{}{
+		"heteronym": true,
+		"tone":      true,
+	}
+	res = process.New("utils.str.Pinyin", "中国", config).Run().(string)
+	assert.Contains(t, res, "zhōng")
+	assert.Contains(t, res, "guó")
+
+	// Test with heteronym and tone number
+	config = map[string]interface{}{
+		"heteronym": true,
+		"tone":      "number",
+	}
+	res = process.New("utils.str.Pinyin", "中国", config).Run().(string)
+	assert.Contains(t, res, "zhong1")
+	assert.NotContains(t, res, "zho1ng")
+	assert.Contains(t, res, "guo2")
+
 	// Test with only custom separator
 	config = map[string]interface{}{
 		"separator": "_",