@max_morais_dmm Thanks your reply.
I ever read link Stop production which is about how to stop production mode and switch to developer mode. The reply from this link seems a little difference with your reply. According to that link, switch from production to developer should do:
cd frappe-bench
rm config/supervisor.conf
rm config/nginx.conf
service nginx stop
service supervisord stop
bench start
So I’m still very confused, which one is right or these two are different things?