The utility model provides a floater processing device. By means of the floater processing device, impact load of a floater line can be buffered even though the floater line on one side of a fishing net acts upward stretch or the floater line acts quick rollback load, and the floater processing device cannot be damage easily. The floater processing device (10) is provided with a crane (10a) and a floater line feeding mechanism (20). The crane (10a) is provided with a main swing arm (15) and an auxiliary swing arm (14). The floater line feeding mechanism (20) is arranged on a front-end side frame (16) to guide a floater line (43a) arranged on one side of a fishing net (43). The front-end side frame (16) is arranged at the front end of the main swing arm (15) and the front end of the auxiliary swing arm (14). In the floater processing device (10), an expansion mechanism (44) is arranged on the auxiliary swing arm (14), and the whole length of the auxiliary swing arm (14) is shortened at the emergency when the floater line (43a) is stretched upwards, and compressive load applied to the auxiliary swing arm (14) is absorbed.