diff --git a/include/loader.h b/include/loader/config.h
similarity index 84%
rename from include/loader.h
rename to include/loader/config.h
index 0510fbe..347f06f 100644
--- a/include/loader.h
+++ b/include/loader/config.h
@@ -1,5 +1,5 @@
-#ifndef _LOAD_H_
-#define _LOAD_H_
+#ifndef _CONFIG_H_
+#define _CONFIG_H_
 
 #include "common.h"
 
@@ -44,7 +44,8 @@ typedef struct {
     char **ttl;
 } cleardns_config;
 
-void load_config(const char *config_file);
-void json_config_parser(cleardns_config *config, const char *config_file);
+cleardns_config* config_init();
+void config_dump(cleardns_config *config);
+void config_free(cleardns_config *config);
 
 #endif
diff --git a/include/loader/loader.h b/include/loader/loader.h
new file mode 100644
index 0000000..e578f45
--- /dev/null
+++ b/include/loader/loader.h
@@ -0,0 +1,6 @@
+#ifndef _LOADER_H_
+#define _LOADER_H_
+
+void load_config(const char *config_file);
+
+#endif
diff --git a/include/loader/parser.h b/include/loader/parser.h
new file mode 100644
index 0000000..de25ad7
--- /dev/null
+++ b/include/loader/parser.h
@@ -0,0 +1,8 @@
+#ifndef _PARSER_H_
+#define _PARSER_H_
+
+#include "config.h"
+
+void config_parser(cleardns_config *config, const char *config_file);
+
+#endif
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index ac65f3f..b7b86dc 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -2,9 +2,10 @@ cmake_minimum_required(VERSION 2.8.12)
 
 include_directories(${PROJECT_SOURCE_DIR}/include)
 include_directories(${PROJECT_SOURCE_DIR}/include/utils)
+include_directories(${PROJECT_SOURCE_DIR}/include/loader)
 
-add_subdirectory(loader)
 add_subdirectory(utils)
+add_subdirectory(loader)
 
 add_executable(cleardns cleardns.c dnsproxy.c common.c overture.c)
 target_link_libraries(cleardns loader utils)
diff --git a/src/loader/config.c b/src/loader/config.c
index fb6d636..5f69079 100644
--- a/src/loader/config.c
+++ b/src/loader/config.c
@@ -1,5 +1,5 @@
-#include "loader.h"
 #include "common.h"
+#include "config.h"
 #include "logger.h"
 #include "structure.h"
 
@@ -95,16 +95,3 @@ void config_free(cleardns_config *config) { // free config struct of cleardns
     free(config->adguard.password);
     free(config);
 }
-
-void load_config(const char *config_file) {
-    cleardns_config *config = config_init();
-
-    json_config_parser(config, config_file);
-
-    log_info("Configure load success");
-    config_dump(config);
-
-    // TODO: load into process
-
-    config_free(config);
-}
diff --git a/src/loader/loader.c b/src/loader/loader.c
index 2d99bbc..6712725 100644
--- a/src/loader/loader.c
+++ b/src/loader/loader.c
@@ -1,5 +1,19 @@
 #include "loader.h"
+#include "logger.h"
+#include "config.h"
+#include "parser.h"
 
 void load_dnsproxy() {
 
 }
+
+void load_config(const char *config_file) {
+    cleardns_config *config = config_init();
+    config_parser(config, config_file);
+
+    config_dump(config);
+
+    // TODO: load into process
+
+    config_free(config);
+}
diff --git a/src/loader/parser.c b/src/loader/parser.c
index 26a0851..af7442e 100644
--- a/src/loader/parser.c
+++ b/src/loader/parser.c
@@ -1,9 +1,9 @@
 #include <string.h>
 #include <stdlib.h>
-#include "loader.h"
 #include "cJSON.h"
 #include "common.h"
 #include "logger.h"
+#include "config.h"
 #include "structure.h"
 
 int json_int_value(char *key, cJSON *json) { // json int or string value -> int
@@ -176,11 +176,10 @@ void json_adguard_parser(adguard_config *config, cJSON *json) { // adguard optio
     }
 }
 
-void json_config_parser(cleardns_config *config, const char *config_file) { // JSON format configure
-    char *config_content = read_file(config_file);
+void json_config_parser(cleardns_config *config, const char *config_content) { // JSON format configure
     cJSON *json = cJSON_Parse(config_content);
     if (json == NULL) {
-        log_fatal("JSON configure `%s` format error", config_file);
+        log_fatal("JSON configure format error");
     }
     json = json->child;
     while (json != NULL) {
@@ -215,3 +214,32 @@ void json_config_parser(cleardns_config *config, const char *config_file) { // J
     }
     cJSON_free(json); // free JSON struct
 }
+
+void yaml_config_parser(cleardns_config *config, const char *config_content) { // YAML format configure
+    // TODO: change YAML -> JSON
+    char *json_content = string_init(config_content); // just demo for now
+
+    json_config_parser(config, json_content);
+}
+
+uint8_t is_json_suffix(const char *file_name) {
+    if (strlen(file_name) <= 5) { // `.json`
+        return FALSE;
+    }
+    if (!strcmp(file_name + strlen(file_name) - 5, ".json")) {
+        return TRUE;
+    }
+    return FALSE;
+}
+
+void config_parser(cleardns_config *config, const char *config_file) {
+    char *config_content = read_file(config_file);
+    if (is_json_suffix(config_file)) {
+        log_info("Start JSON configure parser");
+        json_config_parser(config, config_content);
+    } else {
+        log_info("Start YAML configure parser");
+        yaml_config_parser(config, config_content);
+    }
+    log_info("Configure parser success");
+}