The uranium evaluation information system is a computer system, including the uranium evaluation methods, uranium specialist′s library, uranium deposits library, uranium evaluation program. There are 4 evaluation methods of uranium resources, that is, success tree method, deposit size frequency, uranium prospector′s inquiring system, and multivariable statistics. The paper mainly introduces the success tree method. Uranium speciallist′s library is an important component part of the uranium evaluation system. It is a summary of specialist′s experience. Geological and uranium geological library is a summary of basic geological and uranium geological information, providing large a mount of practical data. Uranium evaluation program is the use of uranium evaluation methods, and is the core of the system.