Guide rail

The utility model relates to the technical field of guide rails, in particular to a guide rail which comprises a guide rail body, the guide rail body comprises a guide rail body, a sliding groove is formed in the top end of the guide rail body, oil outlet holes are evenly formed in the top end of the front face of the guide rail body, and oil storage grooves are formed in the positions, corresponding to the oil outlet holes, in the front face of the guide rail body. And the inner side of the oil storage groove is movably connected with a sponge block, an insertion hole is formed in the right side of the oil storage groove, and an insertion rod is movably inserted into the insertion hole. According to the utility model, the sponge brush is arranged, so that when an object slides in the guide rail body, dust on the contact surface of the object and the sliding chute of the guide rail body can be cleaned by utilizing the ductility of the material of the sponge brush on the premise of not obstructing sliding, and