Conflicts between couples and their parents-in-law are a common phenomenon in Chinese families. In this study, in-law psychological aggression (InPA) victimization and its association with intimate partner violence (IPV), women′s health, and gender role valuation were examined. A household face-to-face survey with random sampling was conducted, and a total of 260 married Chinese women with parents-in-law were recruited. Among the participants, 11.2% and 43.1% had experienced InPA victimization and IPV victimization, respectively, and 7.3% had experienced both. Women′s daily contact with parents-in-law, anxiety symptoms, demand to obey parents-in-law, and the low valuation of the male role significantly positively related to InPA victimization, whereas discussions of in-law conflict with husbands were significantly negatively related to InPA victimization. Therefore, in developing interventions for women experiencing InPA victimization, the role of the husband in InPA victimization and the risk of co-occurring InPA and IPV should be considered. These findings reflect the need to raise awareness about the influence of culture on gender roles, the harm caused by InPA victimization, and the urgent need to help Chinese women who are experiencing in-law conflict.