The invention relates to a hydrogenation reactor apparatus for hydrogenation reaction. The hydrogenation reactor apparatus comprises a tower shell, and is characterized in that a barrel body of the tower shell is of a hollow cylinder structure, and the bottom of the tower shell is provided with a discharging pipe. According to different production conditions, the reaction temperature and the reaction pressure in the tower shell can be monitored in real time, so that the reaction temperature and reaction pressure in the tower shell can be adjusted, so as to control the hydrogenation reaction, and by arranging an air blowing apparatus I, an air blowing apparatus II and an upper cooling apparatus, the reaction temperature is effectively reduced; by arranging an inlet diffuser, a distributor,a ceramic ball layer I, a ceramic ball layer II, a ceramic ball layer III, a ceramic ball layer IV, a ceramic ball layer V, a ceramic ball layer VI, a ceramic ball layer VII, a ceramic ball layer VIIIand a re-distributor, the uniform liquid supply can be realized; and by arranging an illumination light source, the illumination catalytic reaction is realized, and the catalytic conversion efficiency can be improved.