The invention provides a technical scheme of a device for collecting tar in a process of opening a tar pusher furnace door. The device comprises a support which is fixed at the bottom of a tar pusher furnace door opening device; a tar collecting plate is hinged to one end, close to a furnace door, of the support; the tar collecting plate is connected with the tar pusher furnace door opening device through an angle controlling mechanism. By utilizing the device for collecting the tar in the process of opening the tar pusher furnace door, the technical problem of difficult cleaning as high temperature tar flows to a sliding tar plate is solved, and the environment pollution caused by dripped tar is reduced; the device is easy to operate and use, the using effect is good, and the device is worth of popularization and generalization.