The paper analyzes the actuality and the exiting question about the stratigraphic division of the Mesozoic volcanic rock series in South Jiangxi-North Guangdong. The paper brings forward that the volcanic rock series is divide into three volcanic rock series. The lower volcanic rock series is called the Yutian Group, which can be subdivided into the Shuitoujing Formation and Changpu Formation;the middle volcanic rock series is called the Lianhuazhai Group, which can be subdivided into the Shangding Formation and Jilongzhang Formation; the upper volcanic rock series is called the Banshi Group, which can be subdivided into the Heshui Formation and Yousheng Formation. Isotopic ages, show that the Yutian Group is the Middle Jurassic, Lianhuazhai Group Upper Jurassic, Banshi Group Early Cretaceous Late Cretaceous.