The utility model provides an alternating current filter reactor stacks structure, including first reactor frame (2) and second reactor frame (8), the coiling forms a reactor coil (3) on first reactorframe (2), and the coiling forms the 2nd reactor coil (9) on second reactor frame (8), first reactor frame (2) and second reactor frame (8) between form laminated structure, a reactor coil (3) and the 2nd reactor coil (9) between form electric connection structure through high -low pressure short circuit spare (10). Adopt the utility model discloses afterwards, not only can practice thrift alternating current filter floor area to further save the rail area of alternating current filter equipment, but also can cancel the post insulators who is located second reactor frame bottom in traditionalplan of establishment, be favorable to sparingly post insulators's investment cost.