Abstract: Based on core samples analysis,Xing-Ma Archean group buried hill rocks are mainly classified into metamor- phic rocks and magmatic rocks(intrusive rocks).Howev- er,there are various complicated rock-forming minerals with different lithologic characteristics.Due to the differ- ences of log response values,the rocks formed by main rock-forming minerals are of similar logging characteris- tics.Based on accurate core slices and X-ray diffraction method,the logging response characteristics are carefully studied.Therefore,the logging technology to identify reservoir lithology is established.On the premise of accu- rate lithology identification,based on mud logging,for- mation testing and production testing,logging data are used in reservoir identification,which lays a good founda- tion for logging evaluation and comprehensive geology re- search.