The diversified lifestyle of people not only increases the amount of domestic sewage discharged, but also tends to complicate the nature and composition of sewage, making the environmental water bodies that are already under great pressure continue to deteriorate. This article analyzes the current situation and development trend of urban domestic sewage treatment technology and explores feasible solutions. However, the resulting sewage can be discharged arbitrarily without proper treatment, which can easily cause secondary water pollution and serious environmental pollution, seriously damaging the urban environment and people's health. This article mainly analyzes the current situation and main problems of urban domestic sewage treatment technology, and studies the development trend of urban domestic sewage treatment.