The invention provides a refining column reactor heating system. The refining column reactor heating system comprises a column reactor, a reboiler and column wall heating devices, the reboiler is arranged at the bottom of the column reactor and is fixedly connected to the column reactor, the column wall heating devices are symmetrically arranged at two sides of the outer wall of the column reactor and are fixedly connected to the column reactor, two steam feeding devices are respectively connected to the reboiler and the column wall heating devices by pipes, and the pipes are respectively provided with flow control valves for flow adjustment. Through separation of the reboiler and the column wall heating devices, a column reactor temperature is effectively controlled, in after-cut removal, reboiler closing does not influence column wall heating effects, and after-cut removal efficiency is improved so that a refining yield is improved. Reactor residue waste is reduced every year, a production cost is effectively reduced, column reactor waste residue discharge is reduced and environment protection is realized.