The invention relates to a method for preparing an electric power overhead operation sun-screening agent. Electric power construction has the characteristics of more outdoor operations and overhead operations, large labor intensity and the like, and skin health of electric power operators is severely influenced by excessive ultraviolet radiation. The preparation provided by the invention is prepared from the following raw materials in parts by weight: 10 parts of traditional Chinese medicine extract, 12-15 parts of wool fat, 8-10 parts of glycerin, 5 parts of monoglyceride, 3 parts of vitamin C, 2 parts of vitamin E, 2 parts of honey and 30 parts of deionized water. The sun-screening agent is low in ultraviolet transmission rate, has a medium ultraviolet-resistant effect and is nonirritant to skin and wide in application prospects.