The microporous precision filtration equipment is suitable for precision liquid filtration with more solid content and requirements for the dryness of the filter residue. The microporous PE / PA filter tube with excellent chemical performance can be used for multiple backflushing or backwashing, which greatly reduces the cost of use, High efficiency of backflushing / backwashing, long service life, and saving use cost. It requires the water content of the filter residue, realizes the filtration of the remaining material, and the recovery of the filtrate and the liquid residue; completely closed filtration, clean production, no environmental pollution; equipment PLC automatic control program can be used for operation, which can achieve unmanned operation. It is widely used in the production of fine chemicals, biopharmaceuticals, food, and beverages, etc., and the precision solid-liquid filtration (filter of activated carbon decolorizing liquid, catalyst, ultra-fine crystals) with large filter cake volume and high dryness requirements, etc.