Miaoling gold deposit in Henan Province is located in Waifangshan Mountain which belongs to the southern margin of North China block, it occurs in Xiong’er Group faults zone of Proterozoic Changcheng System, broken altered rock type deposit. The Ar-Ar age of hydrothermal K-feldspar is (121.6±1.2) Ma, Deposit formation and the region related to the Early Cretaceous magma-structure-fluid activities.