diff --git a/jikimo_printing/models/jikimo_printing.py b/jikimo_printing/models/jikimo_printing.py
index 738c90b5..183a6b5b 100644
--- a/jikimo_printing/models/jikimo_printing.py
+++ b/jikimo_printing/models/jikimo_printing.py
@@ -52,5 +52,8 @@ class JikimoPrinting(models.AbstractModel):
         """
             打印PDF
         """
+        if isinstance(pdf_data, str):
+            pdf_data = pdf_data.encode()
+            
         printer = self.env['printing.printer'].get_default()
         printer.print_document(report=None, content = pdf_data, doc_format='pdf') 
\ No newline at end of file