The invention relates to a tablet filling machine, and belongs to the technical field of pharmaceutical machines. The tablet filling machine comprises a motor reducing gear, a vacuum system, a rack, a rotary table, a transmission device, a distributing device, a capsule separating device, a detecting device, a priming device, a tablet filling device, a waste rejecting device, a gluing device, a compressing device, a finished product conveying device and a mold cleaning device, wherein the distributing device, the capsule separating device, the detecting device, the priming device, the tablet filling device, the waste rejecting device, the gluing device, the compressing device, the finished product conveying device and the mold cleaning device are sequentially arranged at the position, on the periphery of the rotary table, of the rack; the distributing device, the capsule separating device, the tablet filling device, the waste rejecting device, the compressing device and the finished product conveying device are each connected with the transmission device which is connected with the motor reducing gear, the vacuum system is connected with the capsule separating device, and the detecting device is located between the distributing device and the priming device. According to the tablet filling machine, priming and tablet filling of hard capsules can be achieved; glue is pasted to the inner walls of capsule caps, capsule internal sealing is achieved, the process and the cost are saved, and the capsules are easily absorbed by the human body.