The invention discloses an insole fixing and cloth-sticking mechanism. The insole fixing and cloth-sticking mechanism comprises a rack, wherein an upper pressing rack is fixed on a roof of the rack and comprises two side plates; an upper supporting plate is fixed on top surfaces of the two side plates; a lifting cylinder is fixed on the top surface of the upper supporting plate; a push rod of the lifting cylinder vertically and downwards penetrates through the upper supporting plate, and a transverse plate is fixed on the push rod of the lifting cylinder; two connecting supporting plate is fixed on two sides of the bottom surface of the transverse plate; a guide rod is fixed on two sides of the top surface of the transverse plate and upwards extend out of the upper supporting plate; two ends of a transmission screw are hinged to two connecting supporting plates; a moving motor is fixed on the outer side wall of one of the connecting supporting plates; an output shaft of the moving motor is a spline shaft; the spline shaft is inserted in a spline hole formed in one end of the transmission screw; and two connecting pressing blocks are in screwed connection in the transmission screw. The insole fixing and cloth-sticking mechanism is simple in structure. After the insole is fixed, cloth is conveniently stuck on the insole and is compacted, the efficiency is high, and the effect is good.