The invention relates to an adjustable wrench for bushing leads. The adjusting wrench comprises a wrench body having a fixed pin and a handle, a moving pin with clamp teeth, and a connecting plate disposed on the moving pin and provided with connecting clamp teeth. The wrench body is provided with a slide and a square opening. A roller shaft is disposed in the square opening. The fixed pin and the moving pin are fixed on the wrench body through screws. The connecting plate and the moving pin are meshed with a roller through the connecting clamp teeth and the clamp teeth, wherein the roller capable of rotating on the roller shaft is sleeved on the roller shaft. The adjustable wrench is thin with a large opening and adjustable, and makes demounting of bushing leads greatly convenient for related staff.