The plain of the lower reaches of the Yellow River is one of the area where earthquake often occurred. The area deals with seismic belt of magnituale VI 480000km² and magnitude Ⅷ 450000km². According to the historical statastic data, since 1812 the Huaihe area have entered active period and earthquake action have been concentrating toward the south of Huabei. After Jingjiu railway entered the Yellow River overflow regions, it passed through Liaolan fault belt about 200 km and crossed hanging river—the current Yellow River's course in Taiqian of Henan province. In history, there were the records of Yellow River overflowed, which were caused by earthquake. Therefore seismoaction as well as the Yellow River overflow caused by seismoaction are unstability factors, the tremendous influence to Jingjiu railway and along the railway line areexert. In view of the above mentioned facts, we must strengthen defence system's construction in order to avoid the second disaster.