Disclosed is an arene ruthenium complex with R1, R2, R3, and piperidine as main ligands, preparation method and utilization thereof. R1, R2, R3 are selected from —；H, —；Cl, —；F, —；Br, —；I, —；CF3, —；NO2, —；OCH3, —；OH, —；COOH, —；CH3, —；N(CH3)2, —；C2H2, —；SO2CH3, alkane with 1 to 6 carbon atoms, substituted alkyl with 1 to 6 carbon atoms, phenyl, substituted phenyl, pyridyl, substituted pyridyl, furyl, substituted furyl, pyrrolyl, substituted pyrrolyl, thiazyl or substituted thiazyl group respectively. The substituted groups in the substituted phenyl, substituted pyridyl, substituted furyl, substituted thiazyl and substituted pyrrolyl are selected from hydroxyl, nitro, halogen, amido, carboxyl, cyano, thiol or naphthene group with 3 to 8 carbon atoms, SO3H, alkane with 1 to 6 carbon atoms, alkenyl with 2 to 6 carbon atoms, alkyne with 2 to 6 carbon atoms, C1-C6 hydroxyalkane, C1-C6 aminoalkane, CO2R′；, CONR′；R′；, COR′；, SO2R′；R′；, C1-C6 alkoxyl, C1-C6 alkyl thiol, —；N═；NR′；, NR′；R′； or C1-C6 trifloroalkyl.
