According to previous geological exploration of Sanchagou mine area in Laiwu city, gold deposit occurred in the diorite has firstly been discovered. There is a new understanding of the gold oreforming conditions and geological characteristics of gold deposit in Tietonggou area of Laiwu city. It is regarded that fault structures and magmatic activities of late Yanshan period in Mesozoic are main geologic factors in oretransmitting and orecontrolling. The geophysical and geochemical anomaly causes are close to metal sulfide in the diorite. It is proposed that there is a good metallogenic prospecting future in this area.