How many times can I go to Japan on a three-year multiple-entry visa?

According to the inquiry of China Travel Service, Japan can stay in Japan for up to 30 days with a three-year multiple-entry visa, with unlimited times in one year, but the annual visit to Japan cannot exceed 180 days. Legal basis: According to Article 5 of the Law of People's Republic of China (PRC) Municipality on the Administration of Exit and Entry of Citizens, China citizens may apply to the city or county public security organ where their registered permanent residence is located if they leave the country for private reasons, except in the circumstances specified in Article 8 of this Law.