Chang61 low resistivity oil pays are widely distributed in Triassic Yanchang Formation in Wuqi area of Ordos Basin with large reserves. However，they are often missed or misjudged using traditional identification methods due to uncertainties in their genesis. Based on actual oilfield production practice，data from well drilling，logging，well logging，experiment analysis，well testing and producing test were analyzed for genesis analysis and identification of Chang61 low resistivity oil pays using grey correlation method. The results show that the poor pore structure is the main factor of the formation of Chang61 low resistivity oil pays，and the secondary factors are high content of chlorite and ferrocalcite cements，high formation water salinity and the fine-grained rock. Meanwhile，the cross plot method，logging curve superimposition method，NMR logging method，special logging method and multi-well correlation method were developed for low resistivity oil pays identification. These methods were put into use and good effects were obtained during oilfield production.