DM Button-head anchorage system divides into: A, B, C and K type, and is suitable for high-strength tendon with standard strength of 1570Mpa and 1680Mpa and the diameter of Ø 5 and Ø 7, and used for post-tensioned prestressing concrete. The Button-head applied LD Button-head device. The matched stressing machines are YDC series jack and ZB2× 2 type electric oil pump.