Abstract: Jiaodong Peninsula locates at the southeastern edge of north China craton with a complex geological structure. It is an important producing area of gold in China. To reveal the metallogenic regularity in depth, Shandong Gold Geology and Mineral Resources Co.applied the small-caliber diamond wireline core drilling to prospect the deep gold deposit of Sanshandao. Shengli Logging Company of Engineering Company also conducted the digitizing geophysical well logging in 4000m depth by a small-caliber logs( 60mm) developed its own that made the new record in the field of ultra-depth drilling using small-caliber logs. This study applied the model founded by other researchers to calculate the parameters of Rock mechanics and In-Situ stress by using difference time of S-wave which is predicted by combining the curve of the difference time of p-wave and density. The results showed the minimum horizontal stress was 0.02MPam-1 that calculated from geophysical parametric inversion. The gradient of maximum horizontal stress ranges from 0.024MPam-1 to 0.03MPam-1 and the gradient of vertical stress keeps 0.027MPam-1. The magnitude of in-situ stress in descending order is vertical stress, maximum horizontal stress, and minimum horizontal stress. The type of in-situ stress belongs to normal fault. Finally, this result showed the significance to mining operation in depth. The results could be utilized to guide design of deep mine excavation in the future.