The invention relates to the field of drilling instruments and specifically relates to a drilling platform for a freezing borehole of a service channel. The drilling platform comprises an upper connecting beam, an upper guide rail, cross bars, vertical rods, a steel rail and a lower connecting beam, wherein the vertical rods are fixed under the upper guide rail through U-shaped blocks; two vertical rods are fixed on the upper guide rail; the cross bars are fixed with the vertical rods through embracing blocks II; three cross bars are fixed on the vertical rods; a drilling rig is fixed on an embracing block I through a turntable; the embracing block I is sleeved on the middle cross bar of the three cross bars; a pulley is fixed at one end of each vertical rod away from the upper guide rail through a rib plate; a screw jack is arranged on the lower side of the pulley under each vertical rod; a push rod of the screw jack is downward arranged; the push rod of the screw jack is fixedly connected with a buckle arranged in the steel rail. The drilling platform is convenient to walk along the longitudinal direction; the pitch angle and the left and right deflection angle can be extremely adjusted; the drilling platform can meet the engineering construction requirements, is reasonable in design and is convenient in operation; the working efficiency is increased; and the construction safety is guaranteed.