Abstract: Abstract: In order to explain the performance characteristics and application status of the two types of flip-flow screens in China. the structure and working principle of two kinds of flip-flow screens are introduced, the installation methods of two kinds of sieve plates are compared, according to the practical application of two kinds of screens in coal preparation plants in China, the performance parameters of the two kinds of screens are analyzed from the point of view of dynamic load and power efficiency and compares the performance parameters between these. The results show that the mechanical flip-flow screen has high stability but consumes a large amount of energy. In the same screen area, it has a higher installation height. The unit power consumption of the vibrating flip-flow screen is lower, but the area efficiency and volumetric efficiency are higher than those of the mechanical type. In addition, compared with other screening machines, the vibration strength of both flip-flow screens and the dynamic load have obvious advantages. This provides a certain reference basis for the majority of users in the selection and use of flip-flow screens.