Disclosed is a high-efficiency mixer igniter which is used for a pulse soot blower, comprising a positioning end cover (1), a gas inlet pipe (2), a gas inlet pipeline (3), an upper distributing baffle (4), an inlet upper shield ring (5), an outer shell (6), an inlet lower shield ring (7), a shield ring (8), an affluence baffle (9), a gas collector (10), a shield ring (11), an outlet upper shield ring (12), a lower distributing baffle (13), an outlet lower shield ring (14), a gas outlet pipe (15), an igniter (16), a connection flange (17), a fuel gas outlet (18), and a mixer and the igniter are combined in a whole. The air inlet pipeline (3) and the gas collector (10) are arranged to form two channels which shatter airflow from the center to the surrounding when the airflow passes through and respectively impacts the upper damper (4) and the lower damper (13). Two ring airflow channels which are formed by the upper baffle (4) and the lower baffle (13) as well as the outer shell (6) are arranged. Two airflow channels of the gas collector (10) and the gas outlet pipe (15) have two airflow channels capable of driving air flow to flow to the center in centralization manner. The air inlet pipe (2) is connected by pipe threads, and the mixed air outlet (18) is connected by the flange. The installation positioning is positioned by the positioning end cover (1) and the flange (17).