Abstract: Ultrasonic algae control technology has great development potential and broad application prospects with the advantages of simple equipment, economical efficiency, without secondary pollution and simple management. The basic principles of ultrasonic algae control technology, the factors affecting the efficiency of algae control by ultrasound, the impact of ultrasound on water ecological environment and the algae removal efficiency of ultrasound technology combined with other technologies were reviewed. The results showed that in the case of ultrasonic algae control, the higher the intensity, the greater the energy consumption and the more the cost. Moreover, the excessive power could inhibit the growth of aquatic organisms. Considering the removal efficiency, safety and economy of algae control, the low-power ultrasonic technology was more suitable for cyanobacterial bloom control. At the same time, the combination of ultrasound and other algae control technologies could improve the efficiency of algae removal, which would be a development direction of ultrasonic control algae technology in the future.