///Mesozoic strata of Chao-Shan depression in northern South China Sea is mainly of continental lake sedimentary basin. Focusing on targets in Mesozoic strata, the authors have carried out an over/under streamer and over/under source seismic acquisition test. And this test obtains valuable experience in seismic data acquisition in Mesozoic of Chao-Shan region. The acquired seismic data have satisfactory quality for further study.