diff --git a/plugins/baser-core/src/Service/BcDatabaseService.php b/plugins/baser-core/src/Service/BcDatabaseService.php
index 7c95c473b8..3d0316a7b3 100644
--- a/plugins/baser-core/src/Service/BcDatabaseService.php
+++ b/plugins/baser-core/src/Service/BcDatabaseService.php
@@ -718,13 +718,18 @@ public function loadCsvToArray($path, $encoding = 'auto')
             return false;
         }
 
-        $head = fgetcsv($fp, 10240);
+        $head = fgetcsv($fp, null, ',', '"', '');
+        if ($head === false || $head === [null] || $head === []) {
+            fclose($fp);
+            return [];
+        }
         // UTF-8（BOM付）で何故か、配列の最初のキーに""が付加されてしまう
-        $head[0] = preg_replace('/^(.+)$/', "$1", $head[0]);
-        $head[0] = preg_replace('/^"(.+)"$/', "$1", $head[0]);
-
+        $head[0] = preg_replace("/^\xEF\xBB\xBF(.+)$/", '$1', (string)$head[0]);
+        $head[0] = preg_replace('/^"(.+)"$/', "$1", (string)$head[0]);
         $records = [];
-        while(($record = BcUtil::fgetcsvReg($fp, 10240)) !== false) {
+        // length = null（行長制限なし） escape = 空文字（独自エスケープ無効）
+        while(($record = fgetcsv($fp, null, ',', '"', '')) !== false) {
+            if ($record === [null] || $record === []) continue;
             if ($encoding && $appEncoding != $encoding) {
                 mb_convert_variables($appEncoding, $encoding, $record);
             }
diff --git a/plugins/baser-core/tests/TestCase/Service/BcDatabaseServiceTest.php b/plugins/baser-core/tests/TestCase/Service/BcDatabaseServiceTest.php
index 47a8183645..aec6bc6c92 100644
--- a/plugins/baser-core/tests/TestCase/Service/BcDatabaseServiceTest.php
+++ b/plugins/baser-core/tests/TestCase/Service/BcDatabaseServiceTest.php
@@ -348,16 +348,32 @@ public function test_loadCsvToArray()
         //SJIS のCSVファイルを作成
         $options = [
             'path' => $path,
-            'encoding' => 'sjis',
+            'encoding' => 'SJIS-win',
             'init' => false,
         ];
         $this->BcDatabaseService->writeCsv('contents', $options);
-        $rs = $this->BcDatabaseService->loadCsvToArray($path);
+        $rs = $this->BcDatabaseService->loadCsvToArray($path, 'SJIS-win');
         $this->assertIsArray($rs);
         // 戻り値の配列の値のエンコードがUTF-8になっている事を確認
         $this->assertEquals('メインサイト', $rs[0]['title']);
         $this->assertTrue(mb_check_encoding($rs[0]['title'], 'UTF-8'));
 
+        // SJISのCSVで「能」や埋め込み引用符を含んでも正しくUTF-8へ変換できることを確認
+        $csvContent = "\"a\",\"i\",\"u\",\"e\"\n";
+        $csvContent .= "\"あ\",\"い\",\"う\",\"能\"\"能\"\n";
+        file_put_contents($path, mb_convert_encoding($csvContent, 'SJIS-win', 'UTF-8'));
+        $rs = $this->BcDatabaseService->loadCsvToArray($path, 'SJIS-win');
+        $this->assertEquals('能"能', $rs[0]['e']);
+        $this->assertTrue(mb_check_encoding($rs[0]['e'], 'UTF-8'));
+
+        // 長大な引用符を含む値でも、列が欠落せずに読み込めることを確認
+        $csvContent = "\"a\",\"i\",\"u\",\"e\"\n";
+        $csvContent .= "\"あ\",\"い\",\"う\",\"" . str_repeat('""', 13000) . "\"\n";
+        file_put_contents($path, $csvContent);
+        $rs = $this->BcDatabaseService->loadCsvToArray($path, 'UTF-8');
+        $this->assertCount(4, $rs[0]);
+        $this->assertEquals(13000, strlen($rs[0]['e']));
+
         $file = new BcFile($path);
         $file->delete();
     }