Biphenyl ester is a new selective acaricide for foliar spray. The mechanism of action is a unique effect of mitochondrial electron transport chain complex III inhibitors of mites. It is effective in all life stages of mites, has ovicidal activity and knockdown activity against adult mites (48~72h), and has a long effect period. The validity period is about 14d, and the recommended dose range is safe for crops. Low risk for parasitoids, predatory mites, and lacewing. For apple and grape to control apple starspider, mite, and McDaniel mites, and Lewis mites in ornamental plants.