The utility model provides a fixing structure of a suspension bridge beam section hoisting platform. A first beam section at a main tower of the suspension bridge is used as a hoisting platform; temporary hoops are respectively arranged on the two main cables above the two sides of the midspan end of the first beam section and close to the upper end of the first sling lock clamp of the suspensionbridge; a pulley block is hung at the bottom of each temporary hoop, the two pulley blocks are respectively dragged by two winches fixed on an upstream and downstream anchor rear roadbed of the suspension bridge, the bottom of a movable pulley of each pulley block is connected with the upper end of a lifting rope, and the lower end of each lifting rope is connected with a lower chord of the firstbeam section; the upper chords on the two sides of the first beam section are each provided with a supporting block, and the lifting ropes are supported on the outer side of the first beam section sothat the lifting ropes can not make contact with the upper chords of the first beam section. The hoisting platform is fixed through the two hoisting ropes, and the distance between the two hoisting ropes is larger than the width of the beam section, so that the subsequent beam section of the suspension bridge can be transported to the hoisting platform without rotating, and the hoisting efficiencyof the beam section can be improved.