Do mainland residents use passports to go to Macao?

You don't need a passport to go to Macao, you need a Hong Kong and Macao pass. Hong Kong and Macao Pass is a travel document issued by People's Republic of China (PRC) and the Exit-Entry Administration of the Ministry of Public Security to mainland residents in China for private travel, visiting relatives, engaging in business, training, employment, studying abroad and other non-official activities.

legal ground

Article 9 of the Law of People's Republic of China (PRC) on Exit and Entry Administration.

China citizens shall apply for passports or other travel documents when leaving or entering the country. China citizens who want to go to other countries or regions also need to obtain visas or other entry permits. However, unless the China government has signed visa exemption agreements with other governments or the Ministry of Public Security and the Ministry of Foreign Affairs provide otherwise. China citizens who leave or enter the country as seafarers and work on foreign ships shall apply for a seaman's certificate according to law.

You don't need a passport to go to Macao, you need a Hong Kong and Macao pass. Hong Kong and Macao Pass is a travel document issued by People's Republic of China (PRC) and the Exit-Entry Administration of the Ministry of Public Security to mainland residents in China for private travel, visiting relatives, engaging in business, training, employment, studying abroad and other non-official activities.

legal ground

Article 9 of the Law of People's Republic of China (PRC) on Exit and Entry Administration.

China citizens shall apply for passports or other travel documents when leaving or entering the country. China citizens who want to go to other countries or regions also need to obtain visas or other entry permits. However, unless the China government has signed visa exemption agreements with other governments or the Ministry of Public Security and the Ministry of Foreign Affairs provide otherwise. China citizens who leave or enter the country as seafarers and work on foreign ships shall apply for a seaman's certificate according to law.