Abstract: 25 records of seismic sea wave that happened in our country are studied.Most of sea waves in the coast of China are caused by ocean earthquake, and the regions to be apt to sea wave are Bohai sea coast and southeast coast zone.As the development of coastal region, these kind records are gradually increasing, and the damage is also increasing.In addition, the policy for the development of ocean in our country and the relationship between the location of coastal cities, the scale of port and ocean trade and seismic sea wave damages are analyzed.