The invention relates to a thermocementing device, in particular to a thermocementing device for a beehive paper board, and mainly solves the technical problem of gluing the beehive paper board in a manufacturing process. The device comprises a support (1), a core glue spreader which is arranged on the support (1), and a glue tank (4) which is matched with the core glue spreader, wherein the core glue spreader comprises a drive roller (2) and a driven roller (3); two ends of the drive roller (2) and two ends of the driven roller are arranged on the support (1); and the drive roller (2), the driven roller (3) and the glue tank (4) are provided with electric heating devices. The device sufficiently utilizes the electric heating devices of the support and the rollers, and controls glue amount by adjusting clearances among the drive roller, the driven roller and the glue tank so as to solve the problem of producing the beehive paper boards in different requirements. By adjusting the clearances by adjusting devices, the device not only can control the glue amount, but also can reduce waste of glue, and can further improve the quality of the beehive paper board, thereby achieving aims of greatly reducing floor area of the whole production line, reducing energy consumption and improving production efficiency and product quality.