The invention belongs to the technical field of metal smelting equipment. The slag fishing machine comprises a supporting base, wherein a rotary disk is arranged on the supporting base, a sliding railis vertically fixed to the rotary disk; the slag fishing machine further comprises a first motor fixed to the supporting base, a first transmission mechanism connected between the first motor and therotary disk and a sliding block seat which is arranged on the sliding rail and can slide along the sliding rail; the slag fishing machine further comprises a slag fishing arm, a slag fishing claw isarranged at the front end of the slag fishing arm, the tail end of the slag fishing arm is in rotatable connection with the sliding block seat through a first rotating shaft which is horizontally arranged, a second motor is fixed to the sliding block seat, and a second transmission mechanism is connected between the second motor and the first rotating shaft. The slag fishing machine disclosed by the invention has the advantages of simple structure, ability in effectively improving a slag fishing efficiency and ability in meeting a slag fishing production technology.