Abstract: Geochemical exploration of the partial contents of the elements based on the geogas theory is widely used in the exploration of deep concealed deposits.The information of the deep ore body is migrated to the surface to form a superposition anomaly，and the geochemical exploration of the partial contents can be used to collect and analyze the anomaly to estimate the occurrence of the deep ore body.Based on the results of drilling，gamma spectroscopy and radon concentration，the geochemical exploration of partial content technique is used to discovery the evidence of deep elemental the geothgas migration，which can provide a theoretical basis for further searching for deeply concealed deposits.Taking Jinshiling uranium polymetallic deposit as the study example，three sampling lines with abnormal radon concentrations in the mining area is selected，and the component extraction and ICP-MS analysis of the 20 elements such as U， Pb， Zn etc. from 147 samples of the shallow soil with depths of 40~60 cm is carried out.Based on the above test results，anomaly characteristics analysis，correlation analysis cluster analysis of U component are conducted，and the comparative analysis and interpretation of U component in the geologic synthesis section，U component in the soil and U content in gamma energy spectrum are done.The results show that:① U component of the 3# and 8# lines in the area is obviously abnormal，the maximum values are 2 194 ng/g and 2 167 ng/g，and the abnormal contrast values are 1.298 and 1.403，the prospect of uranium prospecting in the area is good；②the elements are closely related to U partial content are Nd，Sm and Ta，whose correlation coefficients are 0.465，0.492，0.491 respectively，which are much higher than the critical value （i.e.， 0.217） with 99% confidence，demonstrating that it is closely related to U during the gas migration process；③the U partial content anomaly is mainly related to the deep concealed ore body and fracture fracture zone，and the U partial content curve is highly consistent with the Nd，Sm and Ta component curves，which suggests that the U，Nd， Sm and Ta component abnormal combination can be used as a geochemical tracer for the deep uranium ore body in this area.

Key words: Geochemical exploration of partial content, Uranium polymetallic deposit, Concealed deposit, Deep prospecting