The invention discloses a copper pipe clamp which comprises a clamp base. A baffle is fixed at one end of the clamp base, and an air cylinder is fixed at the other end of the clamp base. A sliding groove is formed in the clamp base, a sliding clamp plate is arranged in the sliding groove, one side of the sliding clamp plate is connected with a pushing rod of the air cylinder, a return spring is arranged between the other side of the sliding clamp plate and the baffle, a return spring installation hole is formed in the copper pipe baffle, a fixed clamp plate is arranged on the baffle, and a copper pipe is placed between the fixed clamp plate and the sliding clamp plate. according to the copper pipe clamp, the copper pipe is clamped or loosen through pushing of the clamp plates by the air cylinder, after clamping, a glass pipe is moved and sleeved on the exterior of a light absorption piece sleeve with the copper pipe, the inner wall of the glass pipe can be effectively prevented from being scratched, and assembling quality is greatly improved.