Abstract: To reveal the impact of typhoon on the coastal current in northern South China Sea, in-situ observations and numerical assimilations from July to August in 2015 are used to investigate the oceanic responses to the shelf waves induced by three typhoons, Chan-hong, Langka and Soudelor. on Chan-hong, Langka and Soudelor. The results show that the shelf waves induced by typhoons propagated southwestward from the north of the Taiwan Strait to the Qiongzhou Strait along the south coast of China with an averaged propagation speed of 38.4 km/h, causing southwestward currents with mean speed of 30−50 cm/s and maximum sea level raise of more than 50 cm. The impact of typhoon-induced shelf waves is related to the intensity and the relative distance of typhoons. The stronger the intensity, the closer the distance, the greater the impacts induced by typhoons. These findings are useful for further understanding on how coastal oceanic environment responses to the typhoons and can provide important references for the analysis of tide in marine engineering in the southern coastal areas and continental slope of China.