diff --git a/src/hyper.h b/src/hyper.h
index 681b318..5bce5f0 100644
--- a/src/hyper.h
+++ b/src/hyper.h
@@ -79,11 +79,6 @@ struct hyper_win_size {
 	uint64_t	seq;
 };
 
-struct hyper_killer {
-	char		*id;
-	int		signal;
-};
-
 struct hyper_reader {
 	char		*id;
 	char		*file;
diff --git a/src/init.c b/src/init.c
index 6fb6e8c..6832b9b 100644
--- a/src/init.c
+++ b/src/init.c
@@ -675,24 +675,26 @@ static int hyper_new_container(char *json, int length)
 
 static int hyper_kill_container(char *json, int length)
 {
-	struct hyper_killer killer;
 	struct hyper_container *c;
 	struct hyper_pod *pod = &global_pod;
 	int ret = -1;
 
-	if (hyper_parse_kill_container(&killer, json, length) < 0) {
+	JSON_Value *value = hyper_json_parse(json, length);
+	if (value == NULL) {
 		goto out;
 	}
 
-	c = hyper_find_container(pod, killer.id);
+	const char *id = json_object_get_string(json_object(value), "container");
+	c = hyper_find_container(pod, id);
 	if (c == NULL) {
-		fprintf(stderr, "can not find container whose id is %s\n", killer.id);
+		fprintf(stderr, "can not find container whose id is %s\n", id);
 		goto out;
 	}
 
-	kill(c->exec.pid, killer.signal);
+	kill(c->exec.pid, (int)json_object_get_number(json_object(value), "signal"));
 	ret = 0;
 out:
+	json_value_free(value);
 	return ret;
 }
 
diff --git a/src/parse.c b/src/parse.c
index bc99d94..1355f47 100644
--- a/src/parse.c
+++ b/src/parse.c
@@ -1257,68 +1257,6 @@ fail:
 	return NULL;
 }
 
-int hyper_parse_kill_container(struct hyper_killer *killer, char *json, int length)
-{
-	int i, n, ret = -1;
-	jsmn_parser p;
-	int toks_num = 10;
-	jsmntok_t *toks = NULL;
-
-	memset(killer, 0, sizeof(*killer));
-realloc:
-	toks = realloc(toks, toks_num * sizeof(jsmntok_t));
-	if (toks == NULL) {
-		fprintf(stderr, "allocate tokens for kill container failed\n");
-		goto out;
-	}
-
-	jsmn_init(&p);
-
-	n = jsmn_parse(&p, json, length,  toks, toks_num);
-	if (n < 0) {
-		fprintf(stdout, "jsmn parse failed, n is %d\n", n);
-		if (n == JSMN_ERROR_NOMEM) {
-			toks_num *= 2;
-			goto realloc;
-		}
-
-		goto out;
-	}
-
-	for (i = 0; i < n; i++) {
-		jsmntok_t *t = &toks[i];
-
-		if (t->type != JSMN_STRING)
-			continue;
-
-		if (i++ == n)
-			goto fail;
-
-		if (json_token_streq(json, t, "container")) {
-			if (toks[i].type != JSMN_STRING)
-				goto fail;
-			killer->id = (json_token_str(json, &toks[i]));
-		} else if (json_token_streq(json, t, "signal")) {
-			if (toks[i].type != JSMN_PRIMITIVE)
-				goto fail;
-			killer->signal = json_token_int(json, &toks[i]);
-		} else {
-			fprintf(stderr, "get unknown section %s in kill container\n",
-				json_token_str(json, t));
-			goto fail;
-		}
-	}
-
-	ret = 0;
-out:
-	free(toks);
-	return ret;
-fail:
-	free(killer->id);
-	killer->id = NULL;
-	goto out;
-}
-
 int hyper_parse_winsize(struct hyper_win_size *ws, char *json, int length)
 {
 	int i, n, ret = -1;
diff --git a/src/parse.h b/src/parse.h
index 2bc0280..5d9d232 100644
--- a/src/parse.h
+++ b/src/parse.h
@@ -10,7 +10,6 @@ struct hyper_exec *hyper_parse_execcmd(char *json, int length);
 char *json_token_str(char *js, jsmntok_t *t);
 int json_token_streq(char *js, jsmntok_t *t, char *s);
 int hyper_parse_winsize(struct hyper_win_size *ws, char *json, int length);
-int hyper_parse_kill_container(struct hyper_killer *killer, char *json, int length);
 int hyper_parse_write_file(struct hyper_writter *writter, char *json, int length);
 int hyper_parse_read_file(struct hyper_reader *reader, char *json, int length);
 struct hyper_container *hyper_parse_new_container(struct hyper_pod *pod, char *json, int length);