Abstract: The ore types of the Chalapu Gold Deposit are mainly altered rock type, which is followed by tectonic breccia type and quartz vein type. The gold occurrence state and the embedding characteristics of the gold-bearing minerals arsenopyrite and pyrite in different ore types were studied by means of microscopy, scanning electron microscopy （SEM）, and energy-dispersive X-ray spectroscopy （EDS）. The results show that the embedding characteristics of gold minerals vary among different ore types. In the altered rock type gold ore, independent gold minerals are scarce, and only a small amount of high-fineness （>950 ‰） microscopic–submicroscopic native gold （short diameter: 0.1–0.7 μm） can be observed in the gold concentrate, which is consistent with the early enrichment stage of sedimentary metamorphic type gold ore, indicating that the gold is mainly derived from altered wall rocks. In the tectonic breccia type gold ore, gold minerals are dominated by medium-fineness （881.90 ‰–907.10 ‰） submicroscopic–microscopic native gold （short diameter: 0.1–10 μm） with diverse morphologies, exhibiting characteristics of both sedimentary type and hydrothermal type gold ore, and the gold is derived from altered rocks and later silicon-, arsenic-, and gold-rich fluids. The quartz vein type gold ore is characterized by low-fineness （836.70 ‰–839.00 ‰） medium- to fine-grained native gold （short diameter: 31–38 μm） with simple morphology, which conforms to the characteristics of hydrothermal type gold ore, and the gold is mainly derived from silicon-, arsenic-, and gold-rich fluids. The study of gold occurrence state provides a basis for discussing the genesis of the Chalapu Gold Deposit.