With the high speed development of the marine economy in the region around the Bohai Sea, a series of disasters that are mainly caused or aggravated by human factors have occurred. They are the severe environment pollution of partial marine area, salt water intrusion, coastal erosion, red tide, land surface subsidence, etc.. These human caused ocean disasters as well as natural ocean disasters that are mainly caused by natural factors, such as typhon, windstorm agitation, sea ice, etc., will influence and restrict the sustainable development of the marine resources and environment in this region. In this paper, their characteristics, causes and effects on the sustainable development of the Bohai region are discussed. In order to reduce the ocean disaster and to guarantee the sustainable development of the Bohai region, some countermeasures are suggested. A comprehensive exploitation plan of the Bohai Sea should be prerequisite. The management of the development of the Bohai region should be improved. The protection and renovation of the ocean environment should be strengthened. The construction of coastal engineering projects should be speeded up. With the high speed development of the marine economy in the region around the Bohai Sea, a series of disasters that are mainly caused or aggravated by human factors have occurred. They are severe environments pollution of partial marine area, salt water intrusion, coastal erosion , red tide, land surface subsidence, etc .. These human caused ocean disasters as well as natural ocean disasters that are mainly caused by natural factors, such as typhon, windstorm agitation, sea ice, etc., will influence and restrict the sustainable development of the marine resources and environment in this region. In this paper, their characteristics, causes and effects on the sustainable development of the Bohai region are discussed. In order to reduce the ocean disaster and to guarantee the sustainable development of the Bohai region, some countermeasures are suggested. A comprehensive exploitation plan of the Bohai Sea should be prerequisite. The management of the development of the Bohai region The protection of the ocean environment should be strengthened. The construction of coastal engineering projects should be speeded up.