The invention discloses equipment and a method for testing interface bonding strength. The equipment comprises a fixing device, a sliding device and a test sample holding device, wherein the fixing device comprises a base, a first bearing seat, a second bearing seat, a first rotating shaft and a second rotating shaft; the sliding device comprises a guide rail and a pulley; the guide rail is fixedly connected with the base of the fixing device; the guide rail limits the movement of the pulley along the guide rail; the test sample holding device comprises a chassis and a press plate, the pulley of the sliding device is fixedly at the lower part of the chassis; and the press plate is used for fixing the end of a test sample to the chassis. With the equipment and the method for testing interface bonding strength, the test sample interface bonding strength testing results are stable and reliable, and the bonding strength results of different batches are highly comparable. The equipment and the method of the invention overcome the problems in evaluating interface bonding strength of an aluminum steel composite strips for a brazed heat exchanger by using tension shearing, tearing, pressure shearing or conventional methods, including fracture of the aluminum layer and difficulty in evaluation.