diff --git a/src/config/parse_config.h b/src/config/parse_config.h
index b8d9288..c608628 100644
--- a/src/config/parse_config.h
+++ b/src/config/parse_config.h
@@ -353,6 +353,9 @@ typedef int32_t (*FuncType)(const Arg *);
 Config config;
 
 bool parse_config_file(Config *config, const char *file_path, bool must_exist);
+bool apply_rule_to_state(Monitor *m, const ConfigMonitorRule *rule,
+						 struct wlr_output_state *state, int vrr, int custom);
+bool monitor_matches_rule(Monitor *m, const ConfigMonitorRule *rule);
 
 // Helper function to trim whitespace from start and end of a string
 void trim_whitespace(char *str) {
@@ -3419,14 +3422,12 @@ void reapply_monitor_rules(void) {
 	int32_t ji, vrr, custom;
 	int32_t mx, my;
 	struct wlr_output_state state;
-	struct wlr_output_mode *internal_mode = NULL;
-	wlr_output_state_init(&state);
-	bool match_rule = false;
 
 	wl_list_for_each(m, &mons, link) {
-		if (!m->wlr_output->enabled) {
+		if (!m->wlr_output->enabled)
 			continue;
-		}
+
+		wlr_output_state_init(&state);
 
 		for (ji = 0; ji < config.monitor_rules_count; ji++) {
 			if (config.monitor_rules_count < 1)
@@ -3434,73 +3435,22 @@ void reapply_monitor_rules(void) {
 
 			mr = &config.monitor_rules[ji];
 
-			// 检查是否匹配的变量
-			match_rule = true;
-
-			// 检查四个标识字段的匹配
-			if (mr->name != NULL) {
-				if (!regex_match(mr->name, m->wlr_output->name)) {
-					match_rule = false;
-				}
-			}
-
-			if (mr->make != NULL) {
-				if (m->wlr_output->make == NULL ||
-					strcmp(mr->make, m->wlr_output->make) != 0) {
-					match_rule = false;
-				}
-			}
-
-			if (mr->model != NULL) {
-				if (m->wlr_output->model == NULL ||
-					strcmp(mr->model, m->wlr_output->model) != 0) {
-					match_rule = false;
-				}
-			}
-
-			if (mr->serial != NULL) {
-				if (m->wlr_output->serial == NULL ||
-					strcmp(mr->serial, m->wlr_output->serial) != 0) {
-					match_rule = false;
-				}
-			}
-
-			// 只有当所有指定的标识都匹配时才应用规则
-			if (match_rule) {
+			if (monitor_matches_rule(m, mr)) {
 				mx = mr->x == INT32_MAX ? m->m.x : mr->x;
 				my = mr->y == INT32_MAX ? m->m.y : mr->y;
 				vrr = mr->vrr >= 0 ? mr->vrr : 0;
 				custom = mr->custom >= 0 ? mr->custom : 0;
 
-				if (mr->width > 0 && mr->height > 0 && mr->refresh > 0) {
-					internal_mode = get_nearest_output_mode(
-						m->wlr_output, mr->width, mr->height, mr->refresh);
-					if (internal_mode) {
-						wlr_output_state_set_mode(&state, internal_mode);
-					} else if (custom ||
-							   wlr_output_is_headless(m->wlr_output)) {
-						wlr_output_state_set_custom_mode(
-							&state, mr->width, mr->height,
-							(int32_t)roundf(mr->refresh * 1000));
-					}
-				}
-
-				if (vrr) {
-					enable_adaptive_sync(m, &state);
-				} else {
-					wlr_output_state_set_adaptive_sync_enabled(&state, false);
-				}
-
-				wlr_output_state_set_scale(&state, mr->scale);
-				wlr_output_state_set_transform(&state, mr->rr);
+				(void)apply_rule_to_state(m, mr, &state, vrr, custom);
 				wlr_output_layout_add(output_layout, m->wlr_output, mx, my);
+				wlr_output_commit_state(m->wlr_output, &state);
+				break;
 			}
 		}
 
-		wlr_output_commit_state(m->wlr_output, &state);
 		wlr_output_state_finish(&state);
-		updatemons(NULL, NULL);
 	}
+	updatemons(NULL, NULL);
 }
 
 void reapply_cursor_style(void) {
diff --git a/src/mango.c b/src/mango.c
index 1a6dbd3..d51dba8 100644
--- a/src/mango.c
+++ b/src/mango.c
@@ -820,7 +820,6 @@ static int32_t keep_idle_inhibit(void *data);
 static void check_keep_idle_inhibit(Client *c);
 static void pre_caculate_before_arrange(Monitor *m, bool want_animation,
 										bool from_view, bool only_caculate);
-
 #include "data/static_keymap.h"
 #include "dispatch/bind_declare.h"
 #include "layout/layout.h"
@@ -2840,6 +2839,49 @@ void enable_adaptive_sync(Monitor *m, struct wlr_output_state *state) {
 	}
 }
 
+bool monitor_matches_rule(Monitor *m, const ConfigMonitorRule *rule) {
+	if (rule->name != NULL && !regex_match(rule->name, m->wlr_output->name))
+		return false;
+	if (rule->make != NULL && (m->wlr_output->make == NULL ||
+							   strcmp(rule->make, m->wlr_output->make) != 0))
+		return false;
+	if (rule->model != NULL && (m->wlr_output->model == NULL ||
+								strcmp(rule->model, m->wlr_output->model) != 0))
+		return false;
+	if (rule->serial != NULL &&
+		(m->wlr_output->serial == NULL ||
+		 strcmp(rule->serial, m->wlr_output->serial) != 0))
+		return false;
+	return true;
+}
+
+/* 将规则中的显示参数应用到 wlr_output_state 中，返回是否设置了自定义模式 */
+bool apply_rule_to_state(Monitor *m, const ConfigMonitorRule *rule,
+						 struct wlr_output_state *state, int vrr, int custom) {
+	bool mode_set = false;
+	if (rule->width > 0 && rule->height > 0 && rule->refresh > 0) {
+		struct wlr_output_mode *internal_mode = get_nearest_output_mode(
+			m->wlr_output, rule->width, rule->height, rule->refresh);
+		if (internal_mode) {
+			wlr_output_state_set_mode(state, internal_mode);
+			mode_set = true;
+		} else if (custom || wlr_output_is_headless(m->wlr_output)) {
+			wlr_output_state_set_custom_mode(
+				state, rule->width, rule->height,
+				(int32_t)roundf(rule->refresh * 1000));
+			mode_set = true;
+		}
+	}
+	if (vrr) {
+		enable_adaptive_sync(m, state);
+	} else {
+		wlr_output_state_set_adaptive_sync_enabled(state, false);
+	}
+	wlr_output_state_set_scale(state, rule->scale);
+	wlr_output_state_set_transform(state, rule->rr);
+	return mode_set;
+}
+
 void createmon(struct wl_listener *listener, void *data) {
 	/* This event is raised by the backend when a new output (aka a display or
 	 * monitor) becomes available. */
@@ -2849,9 +2891,7 @@ void createmon(struct wl_listener *listener, void *data) {
 	int32_t ji, vrr, custom;
 	struct wlr_output_state state;
 	Monitor *m = NULL;
-	struct wlr_output_mode *internal_mode = NULL;
 	bool custom_monitor_mode = false;
-	bool match_rule = false;
 
 	if (!wlr_output_init_render(wlr_output, alloc, drw))
 		return;
@@ -2881,7 +2921,6 @@ void createmon(struct wl_listener *listener, void *data) {
 	for (i = 0; i < LENGTH(m->layers); i++)
 		wl_list_init(&m->layers[i]);
 
-	wlr_output_state_init(&state);
 	/* Initialize monitor state using configured rules */
 	m->gappih = gappih;
 	m->gappiv = gappiv;
@@ -2894,6 +2933,8 @@ void createmon(struct wl_listener *listener, void *data) {
 	m->m.y = INT32_MAX;
 	float scale = 1;
 	enum wl_output_transform rr = WL_OUTPUT_TRANSFORM_NORMAL;
+
+	wlr_output_state_init(&state);
 	wlr_output_state_set_scale(&state, scale);
 	wlr_output_state_set_transform(&state, rr);
 
@@ -2903,38 +2944,7 @@ void createmon(struct wl_listener *listener, void *data) {
 
 		r = &config.monitor_rules[ji];
 
-		// 检查是否匹配的变量
-		match_rule = true;
-
-		// 检查四个标识字段的匹配
-		if (r->name != NULL) {
-			if (!regex_match(r->name, m->wlr_output->name)) {
-				match_rule = false;
-			}
-		}
-
-		if (r->make != NULL) {
-			if (m->wlr_output->make == NULL ||
-				strcmp(r->make, m->wlr_output->make) != 0) {
-				match_rule = false;
-			}
-		}
-
-		if (r->model != NULL) {
-			if (m->wlr_output->model == NULL ||
-				strcmp(r->model, m->wlr_output->model) != 0) {
-				match_rule = false;
-			}
-		}
-
-		if (r->serial != NULL) {
-			if (m->wlr_output->serial == NULL ||
-				strcmp(r->serial, m->wlr_output->serial) != 0) {
-				match_rule = false;
-			}
-		}
-
-		if (match_rule) {
+		if (monitor_matches_rule(m, r)) {
 			m->m.x = r->x == INT32_MAX ? INT32_MAX : r->x;
 			m->m.y = r->y == INT32_MAX ? INT32_MAX : r->y;
 			vrr = r->vrr >= 0 ? r->vrr : 0;
@@ -2942,36 +2952,13 @@ void createmon(struct wl_listener *listener, void *data) {
 			scale = r->scale;
 			rr = r->rr;
 
-			if (r->width > 0 && r->height > 0 && r->refresh > 0) {
-				internal_mode = get_nearest_output_mode(m->wlr_output, r->width,
-														r->height, r->refresh);
-				if (internal_mode) {
-					custom_monitor_mode = true;
-					wlr_output_state_set_mode(&state, internal_mode);
-				} else if (custom || wlr_output_is_headless(m->wlr_output)) {
-					custom_monitor_mode = true;
-					wlr_output_state_set_custom_mode(
-						&state, r->width, r->height,
-						(int32_t)roundf(r->refresh * 1000));
-				}
+			if (apply_rule_to_state(m, r, &state, vrr, custom)) {
+				custom_monitor_mode = true;
 			}
-
-			if (vrr) {
-				enable_adaptive_sync(m, &state);
-			} else {
-				wlr_output_state_set_adaptive_sync_enabled(&state, false);
-			}
-
-			wlr_output_state_set_scale(&state, r->scale);
-			wlr_output_state_set_transform(&state, r->rr);
-			break;
+			break; // 只应用第一个匹配规则
 		}
 	}
 
-	/* The mode is a tuple of (width, height, refresh rate), and each
-	 * monitor supports only a specific set of modes. We just pick the
-	 * monitor's preferred mode; a more sophisticated compositor would let
-	 * the user configure it. */
 	if (!custom_monitor_mode)
 		wlr_output_state_set_mode(&state,
 								  wlr_output_preferred_mode(wlr_output));