Abstract: Summarize the quality control points of distribution transformer installation project supervision, including the points and precautions of tower assembly, installation of transformers, lightning arresters, fuses, JP cabinets, grounding devices and other processes.Sort out the quality problems that are easy to occur in each link, and propose solutions.The supervisor shall do a good job in quality supervision, strictly control the process quality, ensure that each process meets the design and specification requirements, and ensure the installation quality of the project.