Hydrofinishing method for coker gasoline

The invention discloses a hydrogenation refining method of coking kerosene. A diene-removing reactor is additionally arranged in front of the reactor of a coking kerosene hydrogenation device for selectively removing the diene and less olefin in an oil product under a lower reaction temperature; the coking kerosene directly enters the hydrogenation device for treatment without through the storage tank of the oil product; an automatic backwashing filter and a circulating oil line are additionally added. The measures can be adopted to effectively delay the pressure drop of the reactor from rising and ensure the running period of the hydrogenation device.