In recent years, with the rapid development of industry, medical treatment, chemical industry and other fields, a large number of pollutants have been produced and discharged, which has gradually affected the ecological environment and human health. Photocatalytic processes have been at the forefront of environmental/catalysis due to their "green" properties and may play an important role in the future of carbon neutrality. Heterojunction piezoelectric photocatalytic materials have become a promising photocatalyst because of their efficient utilization of solar energy. Many kinds of heterojunction piezoelectric photocatalytic materials have been developed to solve the environmental pollution crisis. However, the current research needs to be further deepened, expanded and innovated. This paper reviews the recent progress in the preparation of heterojunction related materials and their applications in water environment. This paper focuses on the synthesis method and construction of heterojunction piezoelectric materials, as well as their degradation effect and mechanism in degrading pollutants in water. In addition, the influence of parameters such as pH value, inorganic anion and material adsorbability on the reaction is also discussed, so as to provide reference and reference for the development of better heterojunction piezoelectric photocatalysts for environmental catalysis. The application prospect of catalyst catalyst is also discussed.