The invention belongs to the technical field of hot melt adhesive coating devices and particularly discloses a hot melt adhesive coating machine and a gluing system. The hot melt adhesive coating machine comprises a pipe body. The bottom end of the pipe body is in a flat-nozzle shape to serve as a glue outlet nozzle. The periphery of the pipe body is provided with heating rings. Each heating ring is provided with a plurality of wiring columns. The peripheries of the heating rings are provided with insulation sleeves. An insulation handle is fixedly connected to the upper end of the pipe body and provided with a temperature control device provided with a temperature sensing probe. One end of the temperature control device is connected with the wiring columns through wires in series. The other end of the temperature control device is connected with a power plug through a power wire. The temperature sensing probe is tightly attached to one heating ring. The gluing system comprises the hot melt adhesive coating machine and an engine base used in cooperation with the hot melt adhesive coating machine. The hot melt adhesive coating machine and the gluing system are mainly used in waterproof roll construction, quick hot melt adhesive bonding between joint edges and between the joint edges and concrete is achieved, continuous coating and bonding are achieved, and the hot melt adhesive coating machine and the gluing system have the beneficial effects of being high in construction speed, easy, convenient and fast to construct and good in effect.