The experimental study of safe and quick regeneration of disposable medical masks” confirmed: the electric blowing air “high-grade” was measured, a minute and a half can reach 65 ℃. After the use of disposable medical masks, wrapped in a fresh bag, home electric hair dryer treatment for 30 minutes can be used again, without affecting its original filtering retention effect, and can inactivate the contaminated virus, and no virus control specimens equivalent. This simple technique can be adopted by the private sector in the very period of mask material scarcity, but is not suitable for other periods or medical units.