We study the four-body exclusive semileptonic baryonic decays of () in the standard model. We find that their decay branching ratios are about , respectively. In particular, the electron mode is close to the corresponding CLEOʼs upper limit of , while all results are about one or two orders of magnitude larger than the previous estimated values for the inclusive modes of . Clearly, both B-factories of Belle and BaBar should be able to observe these exclusive four-body modes.