Ordinary mesh filters are widely used in water source filtration, industrial circulating water systems and other fields because of their good filtering effect and low resistance. However, their disadvantages are small dirt holding capacity, easy to be clogged by dirt and complicated cleaning work. The equipment must be cleaned. The filter components can only be cleaned by disassembly, and the status of the filter cannot be monitored. Moreover, it is greatly affected by human factors, which makes the degree of automation of the entire system very low. The self-cleaning filter produced has the function of filtering raw water, automatically cleaning and draining the Filter Element, and the system will not stop water supply during cleaning and draining. Compared with previous filters, this equipment has the advantages of high degree of automation, large processing capacity, self-cleaning and sewage discharge, uninterrupted water supply, and wide application range.