The invention provides a module assembly multifunctional distribution box. The distribution box comprises a box body module, an eye brow module, a box door module, a panel module, a cable fixing rack and a switch mounting plate; the box door module has an opening on one side, a Z-shaped turnup is arranged on the edge of the opening, an upper eye brow module and a lower eye brow module are arranged separately on the upper edge and lower edge of the opening, the box door module is arranged between the upper and lower eye brow modules, the turning section of one edge of the box door module is connected with the box body module through fixed hinge axis and flexible hinge axis modules, a skylight is arranged in the middle of the box body module, a turnup is arranged on the edge of the skylight, the panel module is fixed in the middle of the box door module through the turnup, the cable fixing rack is arranged on the bottom of the box body module, screw holes are arranged on the Z-shaped turnup on the edge of the opening on one side of the box body module and the cable fixing rack, U-shaped gaps are arranged on both sides of the switch mounting plate and are connected with the Z-shaped turnup through bolts and switch cables are connected with the cable fixing rack through bolts.