A bionic semen collecting device for a donkey comprises a shell, a handle, a buckle, an elastic heat conductive sponge, a first intelligent temperature control displayer and a semen collecting cup. The shell comprises an upper shell body and a lower shell body which are hinged and fixed through the buckle. The handle and the first intelligent temperature control displayer are arranged on the uppershell body. The handle is provided with vent holes. One end of the shell is in a hopper shape and is provided with a hopper opening. The semen collecting cup is buckled and connected to the hopper opening. A second intelligent temperature displayer is arranged on the semen collecting cup. The elastic heat conductive sponge is cylindrical and is installed in the shell. The length of the elastic heat conductive sponge is consistent with that of the shell. A heating wire is arranged in the elastic heat conductive sponge, and an annular elastic sleeve is embedded in the elastic heat conductive sponge. The elastic heat conductive sponge is connected with evenly-distributed beads in series. Evenly-distributed springs are arranged between the shell and the elastic heat conductive sponge. A comfortable temperature is provided for semen collecting work, the elastic space can be increased, a more comfortable semen collecting environment is provided for the donkey in the semen collecting process, and ejaculation of the donkey is made to be sufficient.