The invention discloses an automatic compensation clutch which comprises a shell, a diaphragm spring, an assistant pressure plate, a main pressure plate, a friction plate, a roller chassis, a roller, a roller top tray and a roller offsetting spring, wherein the diaphragm spring and the assistant pressure plate receive an external force; and the assistant pressure plate and the main pressure plate at the two sides of the roller form a space shape with wide upper part and narrow down part so as to deal with the processes of pedaling and loosening the clutch. The invention further discloses a realizing method for the automatic compensation clutch. The invention can solve the problem existing in a common dry friction clutch that the position of the compression part of the clutch is changed because of the abrasion of the friction plate and the problem that separating force is changed because of changed characteristic curve of the diaphragm spring, so that the clutch can keep consistent characteristics in the whole service life.