The invention discloses a sawtooth tail edge structure for electric dust remover airflow distribution boards. The multiple distribution boards of the same structure are arranged at an inlet section of an electric dust remover at equal intervals in the airflow direction. The distribution boards are evenly provided with a plurality of round airflow holes. Materials at the holes are evenly divided into segment shapes and extend into the sawtooth tail edge structure along the edges of outlets of the airflow holes, and airflow channels are formed in the distribution boards. The distribution boards of the sawtooth tail edge structure can tease airflow, the upper limit of airflow uniformizing of the distribution boards is increased, and the spray loss of chaos airflow passing through the holes is reduced; and meanwhile, the stability of the airflow flowing through the distribution board holes is improved, the airflow passing loss and incident dust deposition are reduced. The sawtooth tail edge structure has the characteristics of being simple and small in flow resistance. The divided materials are used as the backward extending sawtooth structure, machining and manufacturing are convenient, and the plate utilization rate is increased; and meanwhile, structure vibration is relieved, the efficiency of the electric dust remover is improved, and the environment pollution is reduced.