This systematic review endeavors to investigate the contentious kinship practice of Tongqi in mainland China. The term refers to the situation where women enter into marital relationships with gay men. The review assesses the prevalence of the Tongqi group in Chinese society, and further explores the socio-legal determinants that contribute to their predicament, including their psychological and social implications. It also delves into the legal and cultural milieu in which marriage defraud occurs in China and can be implicated in future research and policy interventions.