Lower limb circumference measuring device applied to thrombus detection

The lower limb circumference measuring device comprises a first measuring plate, a first magnet is fixedly connected to the left side of the first measuring plate, first scales are arranged on the top face of the first magnet, a sliding groove is formed in the left side of the first magnet, and a connecting belt is fixedly connected to the left side of the inner wall of the sliding groove. The end, away from the left side of the inner wall of the sliding groove, of the connecting belt is fixedly connected with a second measuring plate, and the second measuring plate is slidably connected with the sliding groove. Reading is performed through a first scale line arranged on the first measuring plate and a second scale line arranged on the second measuring plate; the aim of conveniently measuring the circumference of the lower limb of a thrombus patient by medical personnel is achieved, the situation that the medical personnel need to hold a tape measure to measure the lower limb of the patient when the thrombus