The Maerkang rare metal orefield located in the eastern of Songpan- Ganzi orogenic belt is presently the largest pegmatite- type rare metal orefield in China. There are several medium to large scale spodumene pegmatite deposits, including Guanyinqiao, Yelong, Lijiagou, Dangba etc. Due to the limited surface bedrock outcrops and deep topographical incision by the rivers, it is more difficult to find hidden ore veins until now, thus slowing down the prospecting progress. In this paper, we consider the new development of ore- prospecting in the Jiada area as an example, and discuss the application of metallogenic theories and 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 deduced. The tendency of pegmatite is also inferred by combining the hidden high resistivity anomaly zone delineated by multi- electrode electrical measurement. Finally, the position of drilling hole is arranged, and the hidden lodes are controlled. Those prospecting methods are of great use in determining the existence of hidden lodes and their continuity between the outcrops of pegmatite. It is also effective in describing the conformity between the high resistance abnormal zone and the outcrop of spodumene pegmatite or the eluvial- slope gravel belts. Finally, the prospecting strategy for the eastern Maerkangorefield is determined.