In order to study whether the randomevent set can be used in the Rudong bank of Nantong or not, ADCIRC model is used to stimulate the storm surge affecting the Rudong bank based on random event set.Then p-III curve is used to fit peak-value of surges of all the years to get the surge of typical return periods.The result shows that the results of fitting by ADCIRC and by historical data coincide well in lower return periods, but for higher return periods, the results of fitting by ADCIRC are significantly higher than that of fitting by historical data.Due to the short time, it's not enough for the extreme storm surge events to occur, and the results of higher return periods are not reliable, so we can't rule out the reasonability of results based on randomevent set.The results of fitting based on random event set are accurate in lower return periods and we can also fully estimate the surge of higher return periods based on random event set.In the situation of lacking historical data of hundreds of years, random event set can be accepted as a tool to compute the return period of storm surge.Considering the global warming, the possibility of super typhoons' appearance rises, which will result in higher surge of return periods.In order to prevent the disaster of storm surge, the government needs to deepen and reinforce the coastal engineering like seawalls and embankments.