The invention relates to an anti-loose rail press comprising a base, a through pin, an upper cover plate, a T-shaped bolt, a spring washer, a flat washer, and a lock nut; the anti-loose rail press ischaracterized by comprising a pin and a cushion block, and the pin is made of steel wires; two bolt holes are drilled in the middle of the outer edge of the base and screw threads are tapped in the drilled bolt holes, and bolts are connected to the drilled bolt holes; the upper part of the T-shaped bolt is provided with an oval or circular through hole; the position of the oval or circular throughhole formed on the top portion of the T-shaped bolt should ensure that the installed pin is located 1-2mm above the lock nut after the tightening of the lock nut; and the cushion block is mounted between the base and the through pin, and the side face which the cushion block is in contact with the through pin is machined into a saw-like-shaped face. The anti-loose rail press can effectively prevent the problem that the pin exits from the base due to vibration and the situation that loosening of the lock nut due to the vibration cannot achieve a good compaction of a rail, and the problem thatthe rail press is tightened regularly is solved.