An evaporation source cover, an evaporation source and an evaporation apparatus are disclosed. The evaporation source cover comprises a cover body and an elastic dredging member which is arranged on the cover body. The elastic dredging member comprises a bottom part and a top part. The elastic dredging member is fixed to a surface of the cover body at the bottom part. The elastic dredging member is configured to extend and contract in a direction perpendicular to the surface of the cover body.