Multi-layer linear vibrating screen is the use of vibration motor excitation principle, so that the material is thrown on the screen surface, at the same time for linear motion to match the screen so as to achieve the purpose of screening. The machine is composed of frame, vibration chamber, vibration motor, shock absorber, etc. The machine has stable vibration, low noise, simple operation, excellent screening performance, in line with the requirements of "GMP", and is widely used in medicine, food, chemical and other industries of pills and particles screening.