The invention relates to a non-mold concrete tooling and construction method thereof. A device includes a rebar framework and concrete honeycombs are fixedly connected with two sided of the rebar framework. An anchor bar is arranged between the concrete honeycombs and the rebar skeletons. A fixed device includes fixed screws, support outer frames and fixed screw caps, wherein the support outer frames are arranged on the outsides of the concrete honeycombs. Hooks are arranged on the end portions of the fixed screws, and the fixed screws horizontally penetrate through the support outer frames and the concrete honeycombs and connected with transverse rebars and longitudinal rebars in a hinged mode through the hooks. The construction method comprises the steps that the rebars are bound, the concrete honeycombs are installed; the fixed screws are installed; and concrete is poured, the fixed screws are torn down. Non-mold casting of the concrete is realized, the producing of surface crack ofthe concrete is reduced, the cost is saved, the construction period is shortened, and the concrete pouring quality is improved.