The invention relates to a method for preparing ultravioresistant non-woven fabrics, comprising the following steps that: 40 to 60 milligrams of ultraviolet absorbents and 0.7 to 1 gram of polymers are weighed at a room temperature and dissolved into 5 to 15 milliliters of organic solvent to prepare a spinning solution, and the non-woven fabrics are prepared through spinning by adoption of the high-temperature spinning method under the condition that the spinning voltage is between 10 and 25 kilovolts, the distance between a spinneret and a receiving screen is between 10 and 20 centimeters and the extrusion speed of the spinneret is between 0.5 and 5 milliliters per hour. The method is simple, convenient and easy; the equipment demand is simple; and the non-woven fabrics obtained are smooth and neat and have good air permeability and superior ultravioresistant effect.