Laizhou-Zhaoyuan area is the most important gold mineral resources base of China. So far more than 200 various gold deposits (occurrences) have been located. Gold reserves proven here is about a quarter of the total reserves of the whole China. Of the 200 about twenty are large, medium gold deposit. Sanshandao Island gold deposit in the area is one of the typical representative of the famous Jiaojia type gold deposit. Geological characteristic of the deposit is coincided with that of the fault that controls the deposit. It is a post-remelting-magma metasomatic mesothermal gold deposit.