“The Great Wall type” gold ore is a new type of gold deposit,which is originated in carbonatite formation of Great Wall System of Mesoproterozoic erathem.The ore-bearing zone is about 50 km long,4-5 km wide,consists of multiple mining area and dozens of ore body.Generally single ore body is small;ore body thickness variation coefficient is 26%,grade variation coefficient is 74%.The ore bodies were controlled obviously by stratum and tectonic.