This study focuses on 14C chronology and clay mineralogy of SO -31 sedimentary cores in the Beibu Gulf of the South China Sea. It also compares part of global climate events. The purpose is o provide basic information for paleoenvironmental and paleoclimatic recovery, as well as global climate event response in this region. The results show that the sedimentary strata was normal with an average deposition rate of 0.57mm/a in Holocene. The main clay minerals are smectite, illite, kaolinite and chlorite. Clay minerals comprise the combination of smectite-illite- kaolinite-chlorite. The palaeoclimate of Beibu Gulf has experienced five stages since Holocene: relatively cold period, alternating wet and dry cold period, gradually heating period, arid warm period, and wet-hot period. In addition, the clay mineral indexes also recorded several sub cold-warm changes under the background of five main periods. The trend of climate change was alternating wet and dry, and the temperature rose gradually. Due to the marine environment and mineral indicators, the time of cooling events recorded by clay minerals in SO - 31 Beibu Gulf were 500 - 800 years later than the time of YD cooling events which were recorded by other indicators.