The utility model provides a three-phase separating ventilation wind cap for domestic refuse. Percolate and solid particles attached by the percolate are brought to a refuse collecting groove through ventilation holes under the action of the gravities of the liquid and the solid; the solid particles are stayed in the refuse collecting groove eventually through sedimentation; the percolate enters into percolate guide discharging canals through spout holes after being accumulated to a certain degree; meanwhile air enters into the wind cap through air inlets and enters into a heap through the ventilation holes. A baffle plate on the ventilation wind cap adopts steel structure, and is fixed through card slots of a ventilation floor; the design form is easy to replace; the wind cap has the characteristics that the structure is simple, the processing and the manufacturing are easy, the adopted assembling structure is easy to replace, and the sewage cleaning is facilitated; the separation of gas, liquid and residue of the domestic refuse ventilation system is realized.