There are always various types of entries in DT from complex decision problem of command and control, that is, entries with a continuous quantitative attribute, unknown entries or multi-valued entries, and the three types of entries often occur in the same DT. The DT with these entries named Continuous Uncertain Decision Table ( CUDT ) can not be analyzed directly by CRST. Fortunately, by modeling those three types of entries in CUDT with Fuzzy Sets theory, CUDT can be transformed into a special DT called Extended Decision Table ( EDT ) in which each entry is associated with a membership degree. An extended CRST based on this idea is proposed to transform the CUDT into EDT, and the lower approximations and the boundaries of decision concepts in EDT are also calculated by the extended CRST.