Test screen convenient to replace screen cloth

The utility model discloses a test screen convenient for replacing a screen mesh, which comprises a test screen operating platform, a vibration tray fixed at the upper end of the test screen operating platform, a plurality of screen frames arranged at the upper end of the vibration tray, a top cover arranged at the bottom of the screen frames and a fixing device arranged on the vibration tray and used for fixing the screen frames, the screen cloth replacing structure comprises a screen cloth and a plurality of limiting blocks, the screen cloth is arranged at the bottom of the screen frame, the limiting blocks are fixed to the inner wall of the bottom of the screen frame, grooves are formed in the limiting blocks, a plurality of protruding blocks matched with the grooves are fixed to the outer wall of the screen cloth, and spring grooves are formed in the bottoms of the grooves; a first spring is fixed in the spring groove, a clamping block is fixed to the end, away from the spring groove, of the first spring,