diff --git a/application/controllers/keyworlds.php b/application/controllers/keyworlds.php
index 099945ad..a6b7108c 100644
--- a/application/controllers/keyworlds.php
+++ b/application/controllers/keyworlds.php
@@ -341,10 +341,10 @@ class Keyworlds extends CI_Controller {
         // rank 变化
         if ($client_flag === 'PC') {
             $this->Keywords_model->update_time($kw_id);
-            $last_rank_pc = $this->Keywordsrank_model->get_last_pc_rank($kw_id);
-            if (trim($last_rank_pc[0]->kwr_rank) != "") {
+            $last_rank_pc = $this->Keywordsrank_model->get_last_pc_rank($kw_id, 2);
+            if (trim($last_rank_pc[1]->kwr_rank) != "") {
                 $this->load->model('InfoSMS_model');
-                $last_rank_pc = isset($last_rank_pc[0]) ? $last_rank_pc[0]->kwr_rank : $rank['rank'];
+                $last_rank_pc = isset($last_rank_pc[1]) ? $last_rank_pc[1]->kwr_rank : $rank['rank'];
                 $this->InfoSMS_model->readed_for_info($kw_id, 'keywords_rank');
                 $this->InfoSMS_model->add('keywords_rank', $kw_id, $rank['rank'], $last_rank_pc, (string) ($rank['rank'] - $last_rank_pc));
             }
@@ -429,10 +429,10 @@ class Keyworlds extends CI_Controller {
             // rank 变化
             if ($client_flag === 'PC') {
                 $this->Keywords_model->update_time($v->kw_id);
-                $last_rank_pc = $this->Keywordsrank_model->get_last_pc_rank($v->kw_id);
-                if (trim($last_rank_pc[0]->kwr_rank) != "") {
+                $last_rank_pc = $this->Keywordsrank_model->get_last_pc_rank($v->kw_id, 2);
+                if (trim($last_rank_pc[1]->kwr_rank) != "") {
                     $this->load->model('InfoSMS_model');
-                    $last_rank_pc = isset($last_rank_pc[0]) ? $last_rank_pc[0]->kwr_rank : $rank['rank'];
+                    $last_rank_pc = isset($last_rank_pc[1]) ? $last_rank_pc[1]->kwr_rank : $rank['rank'];
                     $this->InfoSMS_model->readed_for_info($v->kw_id, 'keywords_rank');
                     $this->InfoSMS_model->add('keywords_rank', $v->kw_id, $rank['rank'], $last_rank_pc, (string) ($rank['rank'] - $last_rank_pc));
                 }
diff --git a/application/models/infokeywordsrank_model.php b/application/models/infokeywordsrank_model.php
index df0c8039..7c4e31c2 100644
--- a/application/models/infokeywordsrank_model.php
+++ b/application/models/infokeywordsrank_model.php
@@ -64,7 +64,7 @@ class infoKeywordsrank_model extends CI_Model
     }
     public function get_last_pc_rank($kw_id_string, $top=1)
     {
-        $sql = "SELECT top 2 kwr_id,
+        $sql = "SELECT top $top kwr_id,
                          kwr_kw_id,
                          kwr_rank,
                          kwr_mobile_rank,