Abstract: The operating noise of the dual synthetic jets actuator is much lower than that of the synthetic jet actuator, but its noise characteristics still limit its application in the cooling of indoor electronic equipment such as notebook computers, air conditioners and refrigerators. In order to reduce the overall noise of the dual synthetic jets actuator, the vibration and noise characteristics of the dual synthetic jets actuator under different boundary conditions were investigated by means of numerical simulation. It provides guidance for the noise reduction design of the dual synthetic jets actuator. The results show that the vibration of the piezoelectric vibrator and the shell together affect the sound pressure level of the vibration noise of the actuator. The clamping condition has a great influence on the vibration noise. When the piezoelectric vibrator is clamped, the highest sound pressure level of the vibration noise of the actuator is 10 dB lower than that of the actuator when the piezoelectric vibrator is simply supported.