Filter and control method thereof

The invention relates to the technical field of filters, in particular to a filter and a control method thereof. The filter provided by the invention comprises a shell, wherein the shell comprises a water inlet, a water outlet and a drain outlet; the filter assembly comprises a filter screen rotatably connected to the interior of the shell, the filter screen is cylindrical, one end of the filter screen is provided with a liquid inlet communicated with the water inlet, the other end of the filter screen is provided with a first liquid outlet communicated with the drain outlet, and the periphery of the filter screen is provided with a plurality of second liquid outlets communicated with the water outlet; the driving assembly is connected to the shell, and the power output end of the driving assembly is connected with the filter screen; the cleaning assembly comprises a plurality of nozzles arranged in the shell, and the filter screen is arranged on a spraying path of the nozzles. The filter provided by the inve