The invention discloses a hydrocarbon hydrogenation conversion method, wherein one part of hydrocarbon material 8 and hydrogen gas17 exchange heat with the effluent 11 of a reactor 2 after being mixed, which are mixed with the other part of hydrocarbon material 8 to form mixed material 19 after exchanging heat, one part or the total of the mixed material 19 gets into a reactor 2 through a commissioning heater 18, and the other part or the total of the mixed material 19 gets into the reactor 2 through a pipe line 20, the effluent 11 of the reactor 2 which exchanges heat does gas-liquid separation, hydrogen-rich gas which is separated out is used as recycle hydrogen 14, liquid which is separated out gets into a fractionation system to fractionate products which are needed. The method which is utilized by the invention can reduce equipment investment, operation cost and fuel cost.