Abstract: The Ningshan-Zhen’an tungsten molybdenum gold polymetalli concentrated zone is located at a structural junction between the Indosinian fold belt in the South Qinling Mountains and the Yanshanian northeast trending tectonic magmatic rock belt in Laoniushan-Yanzhiba area, where the unique tectonic location and frequent magmatic activities produced a rich and wide variety of mineral resources. The Dongyang tungsten deposit is located near the contact zone between the north-east trend Lanbandeng rock mass and carbonate rocks occurring in the Shiwengzi Formation and the Liangchakou Formation. Based on age determination of 215.7 ± 4.1ma for zircon U-Pb in the NE trending pegmatite type（feldspar quartz vein type） tungsten ore body, the metallogenic age of the Dongyang tungsten deposit should be at the Late Triassic, which indicates that a very important tungsten mineralization event might occur in the Ningshan-Zhen’an area at the late Indosinian period and the formation of tungsten deposits should be closely related to the late Indosinian magmatic activity-mineralization in the area.