The invention relates to a reverse hole distributing method used in longhole bench blasting. In the reverse hole distributing method, the number of hole rows to be distributed in a blasting area, hole spacing and row spacing are determined in a conventional way, and then the holes are distributed by the following steps of: A, determining a minimum front-to-back spacing, B, distributing holes in the last row, C, distributing holes in other rows forwards in sequence, and D, adjusting the positions of holes in the frontmost row: adjusting the holes in the frontmost row in a fine adjustment way, a great adjustment way or a hole compensating way according to the orderliness condition of a bench crest line and the variation of a bench resistance line. The reverse hole distributing method can beused for realizing the orderliness of the blasted bench crest line; the distributed holes are distributed linearly so that the movement of a drilling machine and the aligning of drilled holes are facilitated and the drilling efficiency of the drilling machine is increased; and the reverse hole distributing method is beneficial to overcoming the defects of the traditional hole distributing method,is simple and feasible, can ensure a blasting effect, and is convenient to realize blasting operation standardization.