diff --git a/fileutil/file.go b/fileutil/file.go
index ee8c3ac..bd89967 100644
--- a/fileutil/file.go
+++ b/fileutil/file.go
@@ -8,6 +8,9 @@ import (
 	"archive/zip"
 	"bufio"
 	"bytes"
+	"crypto/sha1"
+	"crypto/sha256"
+	"crypto/sha512"
 	"errors"
 	"fmt"
 	"io"
@@ -377,3 +380,57 @@ func CurrentPath() string {
 
 	return absPath
 }
+
+// FileSize returns file size in bytes.
+// Play: todo
+func FileSize(path string) (int64, error) {
+	f, err := os.Stat(path)
+	if err != nil {
+		return 0, err
+	}
+	return f.Size(), nil
+}
+
+// MTime returns file modified time.
+// Play: todo
+func MTime(filepath string) (int64, error) {
+	f, err := os.Stat(filepath)
+	if err != nil {
+		return 0, err
+	}
+	return f.ModTime().Unix(), nil
+}
+
+// MTime returns file modified time, param `shaType` should be 1, 256 or 512.
+// Play: todo
+func Sha(filepath string, shaType ...int) (string, error) {
+	file, err := os.Open(filepath)
+	if err != nil {
+		return "", err
+	}
+	defer file.Close()
+
+	h := sha1.New()
+	if len(shaType) > 0 {
+		if shaType[0] == 1 {
+			h = sha1.New()
+		} else if shaType[0] == 256 {
+			h = sha256.New()
+		} else if shaType[0] == 512 {
+			h = sha512.New()
+		} else {
+			return "", errors.New("param `shaType` should be 1, 256 or 512.")
+		}
+	}
+
+	_, err = io.Copy(h, file)
+
+	if err != nil {
+		return "", err
+	}
+
+	sha := fmt.Sprintf("%x", h.Sum(nil))
+
+	return sha, nil
+
+}
diff --git a/fileutil/file_example_test.go b/fileutil/file_example_test.go
index d945e6f..f42fbf8 100644
--- a/fileutil/file_example_test.go
+++ b/fileutil/file_example_test.go
@@ -235,3 +235,42 @@ func ExampleIsZipFile() {
 	// false
 	// true
 }
+
+func ExampleFileSize() {
+	size, err := FileSize("./testdata/test.txt")
+
+	fmt.Println(size)
+	fmt.Println(err)
+
+	// Output:
+	// 20
+	// <nil>
+}
+
+func ExampleMTime() {
+	mtime, err := MTime("./testdata/test.txt")
+
+	fmt.Println(mtime)
+	fmt.Println(err)
+
+	// Output:
+	// 1682391110
+	// <nil>
+}
+
+func ExampleSha() {
+	sha1, err := Sha("./testdata/test.txt", 1)
+	sha256, _ := Sha("./testdata/test.txt", 256)
+	sha512, _ := Sha("./testdata/test.txt", 512)
+
+	fmt.Println(sha1)
+	fmt.Println(sha256)
+	fmt.Println(sha512)
+	fmt.Println(err)
+
+	// Output:
+	// dda3cf10c5a6ff6c6659a497bf7261b287af2bc7
+	// aa6d0a3fbc3442c228d606da09e0c1dc98c69a1cac3da1909199e0266171df35
+	// d22aba2a1b7a2e2f512756255cc1c3708905646920cb1eb95e45b531ba74774dbbb89baebf1f716220eb9cf4908f1cfc5b2a01267704d9a59f59d77cab609870
+	// <nil>
+}
diff --git a/fileutil/file_test.go b/fileutil/file_test.go
index 74a795e..5b5316b 100644
--- a/fileutil/file_test.go
+++ b/fileutil/file_test.go
@@ -253,3 +253,34 @@ func TestIsZipFile(t *testing.T) {
 	assert.Equal(false, IsZipFile("./file.go"))
 	assert.Equal(true, IsZipFile("./testdata/file.go.zip"))
 }
+
+func TestFileSize(t *testing.T) {
+	assert := internal.NewAssert(t, "TestFileSize")
+
+	size, err := FileSize("./testdata/test.txt")
+
+	assert.IsNil(err)
+	assert.Equal(int64(20), size)
+}
+
+func TestMTime(t *testing.T) {
+	assert := internal.NewAssert(t, "TestMTime")
+
+	mtime, err := MTime("./testdata/test.txt")
+
+	assert.IsNil(err)
+	assert.Equal(int64(1682391110), mtime)
+}
+
+func TestSha(t *testing.T) {
+	assert := internal.NewAssert(t, "TestMTime")
+
+	sha1, err := Sha("./testdata/test.txt", 1)
+	sha256, err := Sha("./testdata/test.txt", 256)
+	sha512, err := Sha("./testdata/test.txt", 512)
+
+	assert.IsNil(err)
+	assert.Equal("dda3cf10c5a6ff6c6659a497bf7261b287af2bc7", sha1)
+	assert.Equal("aa6d0a3fbc3442c228d606da09e0c1dc98c69a1cac3da1909199e0266171df35", sha256)
+	assert.Equal("d22aba2a1b7a2e2f512756255cc1c3708905646920cb1eb95e45b531ba74774dbbb89baebf1f716220eb9cf4908f1cfc5b2a01267704d9a59f59d77cab609870", sha512)
+}
diff --git a/fileutil/testdata/test.txt b/fileutil/testdata/test.txt
new file mode 100644
index 0000000..c1cac2d
--- /dev/null
+++ b/fileutil/testdata/test.txt
@@ -0,0 +1 @@
+this is a test file.
\ No newline at end of file