Abstract: A multifunctional tool box comprising (a) a central container having an article-holding recess on the top surface thereof and a second article-holding recess on the bottom surface thereof, the center of the front edge of the central container being mounted with a pair of male engaging elements, facing each other, the rear edge corners of the central container being provided with a pair of female connection holes, and a handle being pivotally disposed across the male engaging elements; (b) a top and a bottom edge cover individually provided with an article-holding recess, and the center of the front edge thereof being individually provided with an engaging member and the four corners of the top and the bottom edge cover being disposed with a female connection hole, and the center of the rear edge of the top and the bottom edge cover being provided with a male fastener member, (c) a plurality of connection plates having one surface being provided with two perpendicular protrusions to mount the central container