The invention discloses a steel cable tower fixing method. The steel cable tower fixing method includes: determining a tower tail supporting area and a tower head supporting area; arranging a steel bearing beam on the deck of a transport ship and arranging steel piers on the steel bearing beam; placing a tower tail support and a tower head support on the steel piers; moving a steel cable tower to the position above the tower head support and the tower tail support; jacking up the tower head support and the tower tail support to be contacted with the steel cable tower, placing sleepers on positions between the steel piers and the tower tail support as well as the tower head support, and declining the steel cable tower on position; mounting oblique timbers among the tower tail support, the tower head support and the steel cable tower; mounting a plurality of deck rings on the transport ship, and mounting one ends of multiple groups of binding ropes to the steel cable tower while respectively fixing the other ends to the deck rings through swivel buckles. With the method, potential safety hazard caused by increasing of center of gravity after turning over of the steel cable tower is removed; technical problems that an auxiliary tower is weak in structure, prone to damage and easy to move due to affect of tidewater are solved.