Abstract: Large amount of abnormal behaviors of animals occurr before strong earthquakes,and this is an im- portant criterion to foreknowledge the occurrence of strong earthquakes.If people know the knowledge on this aspect,they can know the probable time of strong earthquakes.This is very important for reducing the casu- alties of strong earthquakes.In this paper we introduced the abnormal behaviors of budgerigar before strong earthquakes,and the quantificational measurement,and we also introduced how to predict the time of earth- quake in future.