In recent years, the frequent occurrence of large earthquakes in the world has aroused people's attention to this special unsafe factor. In China, various kinds of vibration isolation devices used in bridge vibration isolation design technology have also been introduced. Among them, there are several kinds of rubber isolation bearings of small and medium tonnage that are widely used. What is the difference between the performance of these rubber isolation bearings and whether the isolation effect is the same is the topic that the article will discuss.