Fire-fighting pipe cutting device

The utility model belongs to the technical field of cutting, and particularly relates to a fire-fighting pipe cutting device which comprises a fixing block. A feeding hole is formed in the side wall of the fixed block; a cutting groove is opened and closed in the top of the fixed block; a collecting cavity is opened and closed in the side wall of the fixed block; a collecting box is arranged on the inner side wall of the collecting cavity; a handle is arranged on the side wall of the collecting box; the handle is fixedly connected to the side wall of the collecting box, the cutting blade can enter the middle of the fixing block from the cutting groove, and when a pipeline is cut, generated sparks and chippings can splash in the collecting cavity and finally fall into the collecting box, so that the situation that the sparks and the chippings splash is effectively reduced, and then accidents are reduced; and meanwhile, the feeding hole can limit the pipeline in the feeding hole during cutting, so that the situ