Sesquiterpene lactone, a compound extracted from small white chrysanthemum, was initially used to treat skin infections, rheumatism and migraine. Recent studies have shown that small white pyrethroid can inhibit the growth of cancer cells such as prostate chemobook adenocarcinoma, breast cancer, gastric cancer, leukemia cancer, kidney cancer, lung cancer, colon adenocarcinoma, neuroblastoma, etc. In animal models, small white pyrethroid can also treat skin cancer caused by ultraviolet radiation.