The invention relates to the technical field of coiled material construction for roofs, in particular to a coiled material laying device. The coiled material laying device comprises a frame provided with rolling wheels. A material roller where a coiled material is rolled up and a hot-pressing roller used for laying the coiled material on the material roller to the ground surface are arranged on the frame, an extrusion structure is further arranged on the frame, and the extrusion structure comprises an extrusion spring, a flexible pipe, a steel ball and striking pieces used for intermittently striking the steel ball; one end of the extrusion spring is connected with the frame, the other end of the extrusion spring is connected with the flexible pipe, the flexible pipe and the hot-pressing roller are at the same horizontal face, and openings are formed in the two ends of the flexible pipe correspondingly; and the steel ball is arranged in the flexible pipe, the size of the steel ball islarger than the sizes of the openings, the striking pieces are arranged on the frame, and the striking pieces are symmetrically arranged at the two ends of the flexible pipe correspondingly. Accordingto the technical scheme of the coiled material laying device, coiled material continuous pressing is achieved through the flexible pipe, empty swells and bubbles are effectively prevented from beinggenerated in the laying process of the coiled material, and the laying quality and the waterproof and anti-seepage effects of the coiled material are improved.