The invention relates to a heat collecting end. The heat collecting end comprises a cover plate, a microchannel module and a base. The microchannel module is provided with a plurality of cylindrical holes, and the cylindrical holes are used for allowing working media to pass through. The base is provided with an inlet and an outlet which are oppositely formed. The microchannel module is fixedly arranged between the cover plate and the base. The cylindrical holes of the microchannel module extend to the outlet side of the base from the inlet side of the base. An upper slope body is arranged between the inlet of the base and an inlet of the microchannel module, and a lower slope body is arranged between an outlet of the microchannel module and the outlet of the base. In addition, the invention further provides a heat sink including the heat collecting end.