A polysubstituted benzene compound, preparation method thereof, and method of using the same. The compound has a formula I or I′, where X represents carbon, sulfur, or oxygen; R1 represents a C1-16 alkyl, C2-16 alkenyl, or C2-10 alkynyl; R2 represents hydrogen, halogen, C1-16 alkyl, C2-16 alkenyl, or C2-10 alkynyl; or an aryl group or a substituted aryl group by 1-5 groups selected from halogen, C1-26 alkyl, C1-3 halogenated alkyl, O—C1-3 alkyl, hydroxyl, amino, nitro, cyano group, aldehyde group and ester group; or a heteroaryl group or a substituted heteroaryl group by 1-5 groups selected from halogen, C1-26 alkyl, C1-3 halogenated alkyl, O—C1-3 alkyl, hydroxyl, amino, nitro, cyano group, aldehyde group and ester group; the heteroaryl group is a 3-10-membered heteroaryl group including N, S, O, or a combination thereof.