I am in wenzhou and I need to get a passport photo taken where can I go to do so?

You can take the photo in any photo studio. Here list some studios in the city. Just tell the photographers it is for passport and they will do it for you.
Huaguang Photograph located at No. 146 Kangyuan Road.
Hongtaiyang Photo Studio, located at No. 139 of West Yuele Street.
Keda Photo Studio, located at No. 202 Shunaglong Road.
Have a try.

Thank you, very helpful