Abstract: The Jinping basic-ultrabasic rock belt in the southeastern part of the Dali-Yuanjiang-Jinping mafic and ultramafic rock belt can be further divided into three sublets. The Baimazhai-Xin’anli ultrabasic rock subbelt and the Niulanchong-Jiangjiaping basic-ultrabasic rock subbelt are characterized by high degree of basic-ultrabasic magmatic differentiation, intense copper and nickel mineralization, and multi-stage and multi-phase rock-forming and ore-forming activities. Typical ore-forming activities of copper-nickel deposits in the study area include such types as liquation-emplacement-injection type and emplacement-liquation type. Baimazhai-Xin’anli district and Niulanchong-Jiangjiaping district constitute the central places of ultramafic magmatic intrusion and copper-nickel mineralization in Jinping area, and are also important targets in further geological and ore-prospecting work.