diff --git a/go.mod b/go.mod
index 5906486a..acc021e8 100644
--- a/go.mod
+++ b/go.mod
@@ -5,6 +5,7 @@ go 1.15
 require (
 	github.com/BurntSushi/toml v0.3.1
 	github.com/dgryski/go-metro v0.0.0-20200812162917-85c65e2d0165 // indirect
+	github.com/ghodss/yaml v1.0.1-0.20190212211648-25d852aebe32
 	github.com/golang/mock v1.4.4
 	github.com/golang/protobuf v1.4.3
 	github.com/google/go-cmp v0.5.4
diff --git a/go.sum b/go.sum
index 72190eb4..13b54d7c 100644
--- a/go.sum
+++ b/go.sum
@@ -38,6 +38,8 @@ github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMo
 github.com/fsnotify/fsnotify v1.4.9 h1:hsms1Qyu0jgnwNXIxa+/V/PDsU6CfLf6CNO8H7IWoS4=
 github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ=
 github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
+github.com/ghodss/yaml v1.0.1-0.20190212211648-25d852aebe32 h1:Mn26/9ZMNWSw9C9ERFA1PUxfmGpolnw2v0bKOREu5ew=
+github.com/ghodss/yaml v1.0.1-0.20190212211648-25d852aebe32/go.mod h1:GIjDIg/heH5DOkXY3YJ/wNhfHsQHoXGjl8G8amsYQ1I=
 github.com/gliderlabs/ssh v0.1.1/go.mod h1:U7qILu1NlMHj9FlMhZLlkCdDnU1DBEAqr0aevW3Awn0=
 github.com/go-errors/errors v1.0.1/go.mod h1:f4zRHt4oKfwPJE5k8C9vpYG+aDHdBFUsgrm6/TyX73Q=
 github.com/gogo/protobuf v1.1.1/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
diff --git a/infra/conf/serial/loader.go b/infra/conf/serial/loader.go
index b0f9f128..61ee8077 100644
--- a/infra/conf/serial/loader.go
+++ b/infra/conf/serial/loader.go
@@ -7,6 +7,8 @@ import (
 	"io/ioutil"
 
 	"github.com/BurntSushi/toml"
+	"github.com/ghodss/yaml"
+
 	"github.com/xtls/xray-core/common/errors"
 	"github.com/xtls/xray-core/core"
 	"github.com/xtls/xray-core/infra/conf"
@@ -117,3 +119,35 @@ func LoadTOMLConfig(reader io.Reader) (*core.Config, error) {
 
 	return pbConfig, nil
 }
+
+// DecodeYAMLConfig reads from reader and decode the config into *conf.Config
+// using github.com/ghodss/yaml to convert yaml to json
+// syntax error could be detected.
+func DecodeYAMLConfig(reader io.Reader) (*conf.Config, error) {
+
+	yamlFile, err := ioutil.ReadAll(reader)
+	if err != nil {
+		return nil, newError("failed to read config file").Base(err)
+	}
+
+	jsonFile, err := yaml.YAMLToJSON(yamlFile)
+	if err != nil {
+		return nil, newError("failed to read config file").Base(err)
+	}
+
+	return DecodeJSONConfig(bytes.NewReader(jsonFile))
+}
+
+func LoadYAMLConfig(reader io.Reader) (*core.Config, error) {
+	yamlConfig, err := DecodeYAMLConfig(reader)
+	if err != nil {
+		return nil, err
+	}
+
+	pbConfig, err := yamlConfig.Build()
+	if err != nil {
+		return nil, newError("failed to parse yaml config").Base(err)
+	}
+
+	return pbConfig, nil
+}
diff --git a/main/distro/all/all.go b/main/distro/all/all.go
index cc7ec2f0..197ae627 100644
--- a/main/distro/all/all.go
+++ b/main/distro/all/all.go
@@ -62,6 +62,7 @@ import (
 	// _ "github.com/xtls/xray-core/main/json"
 	// The following line loads JSON internally
 	_ "github.com/xtls/xray-core/main/jsonem"
+	_ "github.com/xtls/xray-core/main/yaml"
 
 	_ "github.com/xtls/xray-core/main/toml"
 
diff --git a/main/run.go b/main/run.go
index 33fefaa1..f5cfb94f 100644
--- a/main/run.go
+++ b/main/run.go
@@ -152,6 +152,8 @@ func getConfigFilePath() cmdarg.Arg {
 
 func getConfigFormat() string {
 	switch strings.ToLower(*format) {
+	case "yaml", "yml":
+		return "yaml"
 	case "pb", "protobuf":
 		return "protobuf"
 	case "toml":
@@ -165,6 +167,9 @@ func startXray() (core.Server, error) {
 	configFiles := getConfigFilePath()
 
 	config, err := core.LoadConfig(getConfigFormat(), configFiles[0], configFiles)
+
+	//config, err := core.LoadConfigs(getConfigFormat(), configFiles)
+
 	if err != nil {
 		return nil, newError("failed to load config files: [", configFiles.String(), "]").Base(err)
 	}
diff --git a/main/yaml/errors.generated.go b/main/yaml/errors.generated.go
new file mode 100644
index 00000000..c4da8fa9
--- /dev/null
+++ b/main/yaml/errors.generated.go
@@ -0,0 +1,9 @@
+package yaml
+
+import "github.com/xtls/xray-core/common/errors"
+
+type errPathObjHolder struct{}
+
+func newError(values ...interface{}) *errors.Error {
+	return errors.New(values...).WithPathObj(errPathObjHolder{})
+}
diff --git a/main/yaml/yaml.go b/main/yaml/yaml.go
new file mode 100644
index 00000000..4a647756
--- /dev/null
+++ b/main/yaml/yaml.go
@@ -0,0 +1,44 @@
+package yaml
+
+import (
+	"io"
+
+	"github.com/xtls/xray-core/common"
+	"github.com/xtls/xray-core/common/cmdarg"
+	"github.com/xtls/xray-core/core"
+	"github.com/xtls/xray-core/infra/conf"
+	"github.com/xtls/xray-core/infra/conf/serial"
+	"github.com/xtls/xray-core/main/confloader"
+)
+
+func init() {
+	common.Must(core.RegisterConfigLoader(&core.ConfigFormat{
+		Name:      "YAML",
+		Extension: []string{"yaml", "yml"},
+		Loader: func(input interface{}) (*core.Config, error) {
+			switch v := input.(type) {
+			case cmdarg.Arg:
+				cf := &conf.Config{}
+				for i, arg := range v {
+					newError("Reading config: ", arg).AtInfo().WriteToLog()
+					r, err := confloader.LoadConfig(arg)
+					common.Must(err)
+					c, err := serial.DecodeYAMLConfig(r)
+					common.Must(err)
+					if i == 0 {
+						// This ensure even if the muti-json parser do not support a setting,
+						// It is still respected automatically for the first configure file
+						*cf = *c
+						continue
+					}
+					cf.Override(c, arg)
+				}
+				return cf.Build()
+			case io.Reader:
+				return serial.LoadYAMLConfig(v)
+			default:
+				return nil, newError("unknow type")
+			}
+		},
+	}))
+}