Abstract:The Maerkang rare metal orefield located in the eastern of Songpan-Ganzi orogenic belt is the largest pegmatite-type rare metal orefield in China at present. There are several medium to large scale spodumene pegmatite deposits, include Guanyinqiao, Yelong, Lijiagou, Dangba, etc. Due to the limited outcrop of bedrock on the surface and deeply cutting of rivers on topography, it is more difficult to find hidden ore veins until now, which slows down the prospecting progress. In this paper, we take the new development of ore-prospecting in Jiada area as an example, and discuss the application of metallogenic theories and the practice of prospecting methods. The main contents are as follows: based on the original outcrop of spodumene pegmatite and the eluvial-slope gravel belts delineated by geological mapping, the trend of hidden pegmatite vein is judged; The tendency of pegmatite is also inferred by combining the hidden high resistivity anomaly zone delineated by high-density electrical method, at last ,the position of drilling hole is arranged, and the hidden lodes are controlled. Those prospecting methods are of great contribution on judgment the existence of hidden lodes and their continuity between the outcrops of pegmatite, and which is also effective on describe the conformity between the high resistance abnormal zone and the outcrop of spodumene pegmatite or the eluvial-slope gravel belts. At last, the prospecting direction for the eastern of Maerkang orefield is pionted out in the next step.