Abstract: The processes of defrosting and deicing using a heat-dual-synthetic-jet actuator(HDSJA) were experimentally studied. The temperature of a semiconductor-cooled board was reduced to (-30±2.0)℃, and the HDSJA was started after the droplet frost. The processes of defrosting and deicing were observed by an electron microscope. The experimental results show that it is useful for a heat-dual-synthetic-jet actuator to defrosting and deicing. And the speed of heat-dual-synthetic-jet defrosting is more faster than dual synthetic jet. What's more, the heat-dual-synthetic-jet will reduce the height of the ice-droplet by a further 20 percent from dual synthetic jet.