As a linear actuator, the electromagnetic repulsion mechanism has the advantages of short mechanical delay and fast action speed and can be a solution for mechanical switches. However, the high speed of the moving parts of the electromagnetic repulsion mechanism when it reaches the end will cause a bounce and may even damage the structure. It is necessary to choose a suitable buffer to reduce its speed in the later stages of the stroke. In this regard, this article establishes a bidirectional electromagnetic repulsion model and analyzes the electromagnetic buffering performance. First, calculate the dynamic characteristics of the electromagnetic buffer when the repulsion disk is regarded as a rigid body and a flexible body, and compare the difference in the speed and displacement between the edge and the center points of the repulsion disk. Then the Lorentz force and load distribution at the moment when the velocity and displacement of the two points are significantly different are calculated, and uneven load distribution is the main reason for the decline in the buffering effect. Finally, a reinforcing beam is designed at the repulsion disk and connecting rod, and the dynamic characteristics of the new repulsion disk when the electromagnetic buffering is applied are calculated. The results show that adding reinforcing beams can reduce the load distribution difference by 20% to 30%, which can effectively improve the electromagnetic buffering performance.