Perform free fall test on the face, corner and edge of the package, equipped with a digital height indicator and height tracking using a decoder, so that the product's drop height can be accurately given, and the error from the preset drop height does not exceed 2% or 10mm. This machine adopts single-arm double-column structure, with electric reset, electric control drop and electric lifting device, which is easy to use; unique hydraulic buffer device greatly improves the service life, stability and safety of the machine. The single-arm setting can conveniently place the product, and the error between the impact angle of the drop angle and the plane of the bottom plate is less than or equal to 5°.