Device and method for testing mechanical property of metal net

The invention provides a device and method for testing the mechanical property of a metal net, and belongs to the technical field of testing of the mechanical property of the metal net in a chamber supporting member. The device comprises a fixing structure and a force application assembly, the fixing structure comprises a fixing frame, the top side wall of the fixing frame is used for fixing a metal net, and the force application assembly is arranged in the fixing frame and installed on the bottom side wall; the force application assembly comprises a fixed force application structure and a movable force application structure, the fixed force application structure is used for applying a loading force at a fixed position to the metal net, the movable force application structure comprises a plurality of dispersed force application parts which are arranged around the fixed force application structure and can be in sliding fit with the fixed frame to change the position, and the movable force application structure