diff --git a/src/Sms/SMSProviderSmsbao.php b/src/Sms/SMSProviderSmsbao.php
index 5bbc3ef5..21247495 100644
--- a/src/Sms/SMSProviderSmsbao.php
+++ b/src/Sms/SMSProviderSmsbao.php
@@ -9,19 +9,6 @@ defined('ABSPATH') || exit;
 
 class SMSProviderSmsbao implements ProviderInterface {
 
-	private const ERROR_MESSAGES = [
-		'0' => '短信发送成功',
-		'-1' => '短信宝接口参数不全',
-		'-2' => '服务器不支持短信请求',
-		'30' => '短信宝密码错误',
-		'40' => '短信宝账号不存在',
-		'41' => '短信宝余额不足',
-		'42' => '短信宝账号已过期',
-		'43' => '短信宝 IP 地址受限',
-		'50' => '短信内容含有敏感词',
-		'51' => '手机号码不正确',
-	];
-
 	public function get_key(): string {
 		return 'smsbao';
 	}
@@ -47,20 +34,54 @@ class SMSProviderSmsbao implements ProviderInterface {
 			'p' => $password,
 			'm' => $phone,
 			'c' => $template,
+			'f' => 'json',
 		], 'https://api.smsbao.com/sms'), ['timeout' => 10]);
 		if (is_wp_error($response)) {
 			return ['success' => false, 'message' => $response->get_error_message(), 'transport' => 'smsbao_http'];
 		}
 
-		if (wp_remote_retrieve_response_code($response) !== 200) {
-			return ['success' => false, 'message' => __('短信宝接口请求失败', 'aksrt'), 'transport' => 'smsbao_http'];
+		$status = (int) wp_remote_retrieve_response_code($response);
+		if ($status !== 200) {
+			return [
+				'success' => false,
+				'message' => sprintf(__('短信宝接口请求失败，HTTP 状态码：%d', 'aksrt'), $status),
+				'transport' => 'smsbao_http',
+			];
 		}
-		$result = trim(wp_remote_retrieve_body($response));
+
+		$body = trim((string) wp_remote_retrieve_body($response));
+		if ($body === '') {
+			return [
+				'success' => false,
+				'message' => sprintf(__('短信宝接口返回空响应（HTTP %d），请检查服务器到 api.smsbao.com 的 HTTPS 连接，并查看短信宝后台发送记录。', 'aksrt'), $status),
+				'transport' => 'smsbao_http',
+			];
+		}
+
+		$json = json_decode($body, true);
+		if (
+			!is_array($json)
+			|| !isset($json['code'])
+			|| (!is_int($json['code']) && !is_string($json['code']))
+			|| trim((string) $json['code']) === ''
+		) {
+			return ['success' => false, 'message' => __('短信宝返回了无效的 JSON 响应', 'aksrt'), 'transport' => 'smsbao_http'];
+		}
+
+		$result = (string) $json['code'];
 		if ($result === '0') {
 			return ['success' => true, 'message' => __('验证码短信已发送', 'aksrt'), 'transport' => 'smsbao_http'];
 		}
-		$message = self::ERROR_MESSAGES[$result] ?? __('短信宝发送失败', 'aksrt');
-		return ['success' => false, 'message' => $message . ' | ' . __('错误码:', 'aksrt') . ' ' . $result, 'transport' => 'smsbao_http'];
+
+		$message = trim((string) ($json['msg'] ?? ''));
+		if ($message === '') {
+			$message = __('短信宝发送失败', 'aksrt');
+		}
+		return [
+			'success' => false,
+			'message' => $message . ' | ' . __('错误码:', 'aksrt') . ' ' . $result,
+			'transport' => 'smsbao_http',
+		];
 	}
 
 	public function get_status(array $config): array {