The present invention relates to an agitating apparatus and to agitating hooks for same. The agitating apparatus of the present invention comprises: a rotary shaft rotatably arranged within a reactor; rotary blades arranged on the outer circumferential surface of the rotary shaft, such that the rotary blades rotate together with the rotary shaft in order to agitate materials in the reactor; and agitating hooks arranged on the inner wall of the reactor such that a pair of agitating hooks are spaced apart from each other, and the rotary blades pass through the gap between the agitating hooks. In addition, the width of the gap between the agitating hooks is formed such that an outlet for the exit of the rotary blade is wider than an inlet for the entry of the rotary blade. According to the above-described present invention, constant pressure is applied from the rotary blade inlet to the rotary blade outlet of the gap between the agitating hooks, thus minimizing the occurrence of torsional moment at the agitating hooks. Consequently, the durability of the agitating hooks is improved, and the reliability of products is increased.