The invention belongs to the technical field of application of building construction foundation drill fittings, and in particular, discloses a control support frame applied to a high-torque rotary jet mixing pile construction device. The control support frame comprises an automatic walking car, a power distribution operation chamber and a pulley arranged on the automatic walking car, a main windlass arranged on the automatic walking car and positioned between the power distribution operation chamber and the pulley, a well frame arranged on the automatic walking car and positioned on the outer side of the pulley, a frame support rod respectively connected with the well frame through two ends, and a horizontal head slide piece arranged on the well frame. The control support frame has the following beneficial effects: the purpose of efficiently and precisely controlling and adjusting a drill rod and a drill bit is realized; the positioning is firm after adjustment; the pile distribution construction safety and the construction quality stability are effectively guaranteed; the phenomenon of low adjusting efficiency of a traditional high-torque rotary jet mixing pile construction device and unstable support of a whole support structure is solved; the requirements of stable support and efficient construction adjustment are satisfied; the raw materials are saved; and the production cost is reduced.