The utility model discloses an on -vehicle air -conditioning outlet casing with protection filter equipment, two fixed air outlets on the up end of casing body, still including protection filter equipment, the middle part of two air outlets is equipped with the closing plate, and the below of closing plate is equipped with the cylinder, and the piston rod of cylinder is fixed with the bottom surface of closing plate, and the cylinder is fixed through one end and is fixed at the dead lever of casing body inner wall, be equipped with heavy groove on the inside wall of the well lower part of casing body respectively, protection filter equipment's edge is fixed respectively and is being sunk in the groove, protection filter equipment by last protection network, adsorbed layer and down the protection network constitute, the adsorbed layer is fixed at last protection network under and between the protection network. The utility model discloses an it can intercept following impurity and the little article that the air outlet fell into to be provided with protection filter equipment, prevents that impurity and little article from falling into the inside of air conditioner, prevents to cause the damage to the air conditioner, and the active carbon among the protection filter equipment can clean the air that the air conditioner provided.