Abstract: Unconformable vein super-large uranium deposit, a new type of uranium deposit found in Canada and Australia in 1960s, is characterized by occurrence near unconformity surface with high grade and huge reserves. There exist four unconformity surfaces in Precambrian in east Liaoning Province. The famous Lianshanguan uranium deposit is hosted near the unconformity surface between Archaeozoic and Proterozoic strata. It is then concluded that eastern Liaoning is a prospective area for searching unconformable vein super-large uranium deposits.