Abstract: In order to accurately simulate the wave field distribution in the Lianyungang sea area during Dawei typhoon transition period, 10 m wind speed above sea surface was simulated by a Jelesnianski atmospheric model. The wave mode MIKE-SW driven by the wind field simulated the wave growing process of 1210 typhoon Dawei. The simulated results show that the Dawei typhoon moving and changing processes were successfully simulated by the Jelesnianski atmospheric model, double typhoon effects were formed in combination with No.1209 Sula typhoon. During the Dawei typhoon period, the maximum water level increase by the storm surge measured in the Lianyungang marine station was 1.78 m, and this phenomenon of water level increase by the storm surge is very significant in the Lianyungang sea area. The stormy wave growth process was well simulated in the Lianyungang sea area considering triple nested grid technology and real-time storm surge water. The meximum wave height was 3.86 m in the Lianyungang ocean station. Nearshore wave height distribution contour lines were relatively dense, and the wave distribution trend and underwater topographic isobaths were basically the same. The wave height attenuation velocity quickened significantly within the surf zone. These properties conform with the nature of the muddy coast, and the Lianyungang sea area belongs to this type of coast.