Based on the storm surge data of the two tide stations in Quarry Bay and Tai Po Kau in the east of Hong Kong, this paper focuses on the maximum storm surge caused by the typhoon processes affecting Hong Kong in 1999-2018. The generalized extreme value distribution was applied to uniformly fit the maximum typhoon surge of the two stations, and the joint probability distributions of the maximum typhoon surge at the two stations were constructed, and the joint intensity of the tidal disaster was calculated according to the joint recurrence frequency analysis based on the bivariate Copula function. The results showed that the joint recurrence frequency of the maximum storm surge variables at the two stations can reflect the intensity of storm surges triggered by typhoons in eastern Hong Kong. This joint probability analysis has stronger regional applicability than the unitary analysis.