The invention discloses an evaporator assembly of a cooling fan and the cooling fan. The evaporator assembly of the cooling fan comprises a supporting frame used for simultaneous installation of a wetcurtain and a filter screen, and a water diversion groove and a water receiving groove which are integrated with the supporting frame, wherein the filter screen is arranged on the portion, on one side of the upper reach in the flowing direction of air flow of the cooling fan, of the supporting frame, the wet curtain is arranged on the portion, on the side of the lower reach in the flowing direction of the air flow of the cooling fan, of the filter screen, the water diversion groove is formed in the upper end of the supporting frame, the water receiving groove is formed in the lower end of thesupporting frame, and water in the water diversion groove can enter the water receiving groove through the wet curtain. According to the evaporator assembly of the cooling fan, the four different materials are integrated, so that the evaporator assembly of the cooling fan has multiple functions of water diversion, wet curtain fixing, water receiving and air filtering; the structure is simple, operation is convenient, cleaning is convenient, the product cost is reduced at the same time, and the production efficiency is greatly improved.