The invention relates to a ton bag auxiliary feeding device and a feeding method. The device comprises a bearing table; the bearing table includes an outer frame, an inner frame and multiple connecting pipes; the outer frame and the inner frame are connected through multiple connecting pipes; the bearing table is used for bearing ton bags; a guide cylinder is arranged in the inner frame, and is provided with a pouring port in the upper part; the pouring port is connected with a discharge port of the ton bags; a crane drives the ton bags to perform a up-down reciprocating motion in a direction perpendicular to the bearing table, so that the bottoms of the ton bags are repeatedly bonded with the inner frame, and materials in the ton bags are leaded in the guide cylinder by the pouring port; and the bracket is arranged at the bottom of the outer frame, is perpendicularly connected with the outer frame for supporting the bearing table. The feeding device can realize accurate, safe and flexible feeding, largely reduces the labor intensity of workers in the feeding process, and is simple in structure and low in cost.