The invention discloses a vacuum furnace beacon tower control method. Oil enters a vacuum furnace through two furnace pipes in abreast arrangement, and each of the two furnace pipes comprises a flow measuring instrument and a temperature measuring instrument. FI_A refers to the feeding flow instrument of the first furnace pipe, TC_A refers to the oil temperature measuring instrument of the first furnace pipe, FI_B refers to the feeding flow instrument of the second furnace pipe, TC_B refers to the oil temperature measuring instrument of the second furnace pipe, and TC_DFO refers to a furnace outlet temperature controller. The vacuum furnace beacon tower control method has advantages that on the basis of a whole system material and energy dynamic-static balance conception, by integration ofdynamic relations of upper and lower units of the vacuum furnace from the perspective of integral stable operation in the whole process, operating condition information of upper units can be quicklyand effectively acquired to timely implement beacon tower control when operating conditions of the upper units change, and accordingly stability in device operation can be improved beneficially, and device operating efficiency is improved.