The toilet, in a busy park in Pudong New Area, will have 10 unisex stalls, plus some urinals and a stall for disabled people.
The opening on 19 November will coincide with World Toilet Day.
Unisex facilities will spare officials having to decide how to share out male and female stalls, say reports.
"It is an apparent problem that women have to wait in lines for toilets," Fu Liping, an official involved in the project, was quoted as saying, by the Xinhua news agency.
