The invention discloses an implant device for implanting a fixed false tooth, and belongs to the technical field of fixed false teeth; the implant device comprises an implant main body, a clamping groove is formed in the lower part of the interior of the implant main body, a plurality of limiting grooves are formed in two sides of the interior of the implant main body, and a connecting rod penetrates through the interior of the implant main body; and a clamping block is fixed to the bottom of the connecting rod, and a plurality of limiting blocks penetrate through the two sides of the connecting rod. The implant device is provided with threaded grooves, threaded seats, limiting rods, sliding rails and sliding blocks, when the fixing false tooth needs to be disassembled and replaced, a connecting block can be rotated firstly, the threaded grooves are moved out of the threaded seats, then the limiting rods are pulled out, after the limiting rods are pulled out, the plurality of limiting blocks are not extruded any more, and then the connecting rod can be pulled out by pulling the threaded seats; in the process, the plurality of limiting blocks can retract into the connecting rod along the arc-shaped side edges under pulling force, so that disassembly is completed, operation is easy and convenient, and the situation that a false tooth is not easy, convenient and safe enough when needing to be replaced and disassembled is avoided.