The Jinyinshan lithium deposit is located in Chibi City, Hubei Province. The ore- bearing rocks are mainly silicified cataclasite, cataclastic silty slate, cataclastic argillaceous slate, metamorphic siltstone, and lamprophyre. It has been reported that the cookeite is found in the cataclastic silty slate in this area, However, there is a lack of research on the form of lithium in all ore- bearing lithology, especially in lamprophyre. The article selected all ore- bearing lithology in the area for scanning electron microscopy analysis, and it is believed that there are no mica minerals in this area. In situ X- ray diffraction (XRD) study was carried out and the characteristic peak of cookeite was found. In situ trace element analysis (LA- ICPMS) and other analyses have been carried out. It is found that Li and Al2O3 have a strong positive correlation, which confirms that lithium in this area exists in the form of cookeite. In addition, cookeite in this area is mainly filled between quartz grains or in olivine pseudocrystals, and its occurrence is scaly and bamboo leaves, It is completely consistent with the genetic characteristics of the hydrothermal cookeite, so it is inferred that cookeite in Jinyinshan mining area is of hydrothermal origin. As the Mufu Mountains complex rock body, which is closely related to rare metal mineralization, is about 15 km away from the south, the ore- forming materials may come from the southern rock body,In the subsequent process of mineral exploration, attention should be paid to searching for similar lithium deposits between the F9 fault and the rock mass.