The utility model relates to a tablet coating device. The utility model provides a continuous skin coating device for tablets. The device comprises a lower coating film unwinding drum, a slitter edgewinding drum, an upper coating film unwinding drum, a lower coating film heating component, an upper coating film heating component, a first mold provided with a first tablet placing hole, a second mold provided with a second tablet placing hole, a heat sealing plate, a cutting assembly, a plain tablet implanting component and an operating table, the lower coating film unwinding drum and the slitter edge winding drum are arranged on the two sides of the operation table; wherein the lower coating film heating component, the plain tablet implanting component, the upper coating film unwinding barrel, the upper coating film heating component, the heat sealing plate, the cutting assembly and the tablet pushing component are arranged above the operating table; the first mold is arranged below the operation table below the plain tablet implantation component, the second mold is arranged below the operation table below the heat sealing plate, and the upper coating film heating component is arranged below the upper coating film unwinding barrel. The tablet coating machine is environment-friendly, low in manufacturing cost, capable of realizing automatic and intelligent continuous production, and suitable for coating of various tablets with different shapes.