The utility model relates to metal forming machinery equipment, in particular to a closing height adjusting mechanism of press which belongs to the technical field of machinery equipment processing and comprises a circle of cylindrical pin rollers additionally arranged between a gland and a screw to form rolling friction; the contact between the gland and the screw is not plane contact; the closing height adjusting mechanism of press reduces the friction between the contact surface of the screw and the gland during the process that a worm drives the screw to rotate, eliminates the damage between the contact surface of the screw and the gland, is beneficial for stabilizing the gravity of a sliding block, and plays a certain role of guaranteeing the precision of the press.