Distribution box clamping rail assembly and distribution box

The utility model relates to the technical field of power distribution boxes, in particular to a power distribution box clamping rail assembly and a power distribution box, which comprises a clamping rail, connecting columns are arranged on two sides of the back of the clamping rail, an embedded groove is arranged on one side of each connecting column, a clamping block is movably arranged in each embedded groove, and the clamping blocks are elastically connected into the embedded grooves through elastic pieces. One surface, back to the clamping rail, of the clamping block is inclined; guide holes are formed in the left and right ends of the clamping rail and located on the upper and lower sides of the connecting column. Compared with the prior art, the clamping rail is more convenient to disassemble and assemble, and the assembling efficiency of the clamping rail can be improved easily due to the fact that the clamping rail and the stand column are clamped and fixed through the connecting column and the clamp