diff --git a/.env b/.env
index 0f704df..1acd67d 100644
--- a/.env
+++ b/.env
@@ -1,10 +1,13 @@
 # server
-apiport = :8080
+_apiport = :8080
 
 # database
 user = root
 password = "12345678"
 
+# qwe
+
+
 host = 127.0.0.1
 port = 3306
 
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..e54fa53
--- /dev/null
+++ b/README.md
@@ -0,0 +1,40 @@
+# dotenv
+
+A Go language parsing tool for key value pair configuration files.
+
+Used in configuration file parsing of back-end small applications. Only the following features are supported, please consider using them.
+
+### grammar
+
+This tool parses by line, where one line can be a key value, a comment, or a blank line.
+
+```
+_id=20
+name = "Kate"
+# Comment
+```
+
+- Keys can be uppercase and lowercase English letters and underscores.
+- The equal sign cannot be missing.
+- Values are parsed as strings by default, and single and double quotes are automatically ignored.
+
+### value types
+
+Structure unmarshalling of the following value types is supported.
+
+```go
+string
+int     | int8    | int16  | int32  | int64
+uint    | uint8   | uint16 | uint32 | uint64
+float32 | float64
+```
+
+### install
+
+```
+go get github.com/bingxio/dotenv
+```
+
+### example
+
+See: [parser_test.go](https://github.com/bingxio/dotenv/blob/main/parser_test.go)
diff --git a/parser.go b/parser.go
index 353f06d..fd6b65f 100644
--- a/parser.go
+++ b/parser.go
@@ -111,8 +111,9 @@ func unmarshal() (KvSlice, error) {
 		if whiteSpace(); ip >= len(buffer) {
 			return slice, nil
 		}
-		if markComment(); ip >= len(buffer) {
-			return slice, nil
+		if now() == '#' {
+			markComment()
+			continue
 		}
 		v, err := markKeyValue()
 		if err != nil {
diff --git a/parser_test.go b/parser_test.go
index d929ece..0ba60b5 100644
--- a/parser_test.go
+++ b/parser_test.go
@@ -7,11 +7,11 @@ import (
 )
 
 type Config struct {
-	ApiPort  string
+	ApiPort  string `env:"_apiport"`
 	User     string
 	Password string
 	Host     string
-	Port     int
+	Port     uint
 	Db       string `env:"db_name"`
 }