The invention discloses an acoustic agglomeration synergistic demister, which is composed of corrugated plates, vibrating reed units and a support device. There are several corrugated plates and the corrugated plates are arranged right and left at intervals. An airflow channel is formed between adjacent corrugated plates. The vibrating reed unit is installed at the inlet end of each airflow channel. The corrugated plates are connected and fixed through the support device. The invention relates to the field of pollution control. By the acoustic agglomeration principle, agglomeration and removal of droplets are finished in the corrugated plates, thus realizing efficient removal of liquid spray. Through vibration of the vibrating reeds, high-intensity sound wave is generated, and then defects such as complex structure of a sound source horn and high energy consumption are avoided. In comparison with a conventional demister, the demister of the invention has advantages of high demisting efficiency, reliable operation, small size and low cost. Without changing the original structure of a desulfurizer, high-efficiency and low-energy-consumption removal of droplets is realized.