The invention relates to a powder screening device, particularly to a powder screening device for a lithium battery production technology, and provides the convenient-operation, thorough-screening and novel-structure powder screening device for the lithium battery production technology. The powder screening device for the lithium battery production technology comprises a first bearing seat, a grab handle, a connecting rod, a special shape gear, a first rotating shaft, a first belt pulley, a second rotating shaft, a second belt pulley, a disc cam, a second bearing seat, and the like, wherein third springs are in symmetrical hook connection with the left side of the bottom in a mounting rack; and fixed blocks are in hook connection with the top ends of the third springs. According to the powder screening device, the effects of convenient operation, thorough screening and novel structure are achieved, besides, the manufacturing cost is low, the structure is reasonable, the maintenance is easy, the utilization is convenient, the input of manpower and material resources is reduced, and the working efficiency is improved.