The utility model relates to a drying device field, concretely relates to psammitolite drying equipment, include: including roll table transmission device, the electric cabinet of control and dry -off oven main part, wherein, roll table transmission device includes: outside heavily loaded roll table, tray, travel switch a, travel switch b, power roller, aluminium system flange, sprocket and gear motor, the dry -off oven main part includes: components such as exhaust wet fan, temperature sensor, air pipe, rectangular waveguide, magnetron subassembly and sealing door. The utility model discloses use the microwave heating technique, can shorten heat time, raise the efficiency, the continuous fast drying that realizes psammitolite and coating with make the mechanized automatic of the core ministry of worker, adopt panel beating labyrinth structure in addition, but add absorbing microwaves's silicon rubber bar in the structural joint crack, reduced microwave leakage in the at utmost, prevent the radiation injury that microwave leakage produced to the human body.