Abstract: It is estimated from pressure data of fluid inclusion that gold deposits in the northwestern of Jiaodong peninsular were formed between the upper limits of 2 to 3 km and the lower limits of 5 to 8 km.Taking into consideration of the age，formation depth and occurrence of Mesozoic granitoid in this area，the gold deposit hosting block were roughly lifted and eroded 2.0 to 2.5 km，with estimated minimum of 1.5 km and maximum of 3.0 km.Hence，there is slight erosion in the gold ore forming in the northwest of Jiaodong，which belongs to the well preserved hydrothermal system.It is inferred that there is a great potential of gold resource above 3 km in depth of the main ore deposit hosting faults in the northwest of Jiaodong peninsular.

Key words: Jiaodong, Gold deposit, Fluid inclusion, Erosion depth, Resource estimation in depth