The invention belongs to the field of biological medicine and particularly relates to 1,3,4-selenadiazole compound with drug activity. As a few types of heterocyclic selenium exist and BPTES (thiadiazole compounds) has a strong tumor growth suppressing function, a novel synthesizing method is utilized to synthesize multi functional groups substitutional selenadiazole compound, tests verify that the compound has a tumor inhibition effect, an antioxidation effect and a cell protection function; selenadiazole can serve as bioisostere of thiadiazole to substitute; presently, many drugs contain thiadiazole, so that synthesizing selenadiazole derivative with multi functional groups and further optimizing the activity of the medicinal thiadiazole compound have significance in aspects of new medicine development and application and the like.