The invention relates to a processing process of a screw pipe bending machine, which is used for bending hollow steel pipes. The processing process comprises the following steps of: (1) filling a real object into a hollow steel pipe, sealing both ends of the steel pipe and bending the steel pipe; (2) receding a counter shaft through a driving and reversing mechanism, mounting one end of the steelpipe in a mounting groove of the counter shaft, aligning a bending part to the end part of the counter shaft, and buckling the other end of the steel pipe into a first tooth of a thread groove; (3) forwards impelling the counter shaft through the driving and reversing mechanism until the counter shaft is engaged with a spindle; (4) starting a motor to drive the spindle to rotate and bending and molding the steel pipe along the thread groove of the spindle; (5) receding the counter shaft, taking out the counter shaft through manpower, taking out a processed and molded product and pouring out the real object in the steel pipe; and (6) mounting the counter shaft on an engine base to renewedly produce a next workpiece. The processing process does not need too much manpower so as to reduce theproduction cost, improve the efficiency and have stable quality.