[en] The validity of Pb isotope eigenvector V₁ exploration method was carried out in Mianhuakeng uranium deposit to indicate hidden uranium deposit. The results show that the V₁ parameter can effectively identify the zone of ore bearing granite altered fracture in the region, which can be applied to predict the hidden uranium deposit prospecting. In Youdong area around Mianhuakeng uranium deposit, the main metallogenic prognosis area was delineated by using the Pb isotope eigenvector V₁ exploration method of the surface soil samples. (authors)