On October 20, 2024, a relatively large-scale seawater inflow occurred in the Bohai Sea region of China. This paper argues that this large-scale influx is mainly caused by the relatively large number of super typhoons that have generated over the entire Pacific Ocean this year. The energy accumulated by several super typhoons caused very long Seiche standing waves throughout the Pacific Ocean. Although the amplitude of the standing wave is not large, about 0.3m, such an amplitude of Seiche may cause the existence of a secondary Seiche phenomenon with a higher amplitude after passing through a relatively narrow bay on the west coast of the Pacific Ocean. In some narrow bays, the amplitude of this Seiche standing wave may reach more than 1m, resulting in a more serious seawater inflow problem in the coastal areas of the west coast of the Pacific Ocean. Therefore, in this paper, we should consider the changes in sea level throughout the Pacific Ocean caused by the accumulation of energy from multiple super typhoons over a relatively long period of time, in addition to the disasters caused by a single typhoon when disasters such as seawater inflow occur.