Thanks for your help and advice ，u are right.
My idea into the erroneous zone.I think using multiple gateway will let the workfolw chart become very disorderly,so I want to try other ways .
when I see Mauricio's and your suggestion and view the related BPMN standard ,I optimized my process , using multiple disagree gateway and
as far as possible let workflow looks not so mixed and disorderly.
https://community.jboss.org/servlet/JiveServlet/downloadImage/2-779016-19945/450-199/ASKLEAVE2-image.png
Regards
Lyman
