The invention discloses an interchangeable light saddle which is applicable to a 50# traction pin and a 90# traction pin at the same time. The interchangeable light saddle comprises a horseshoe as well as two sets of horseshoe mouths and locking hooks, wherein the horseshoe is positioned at the center of a saddle body; the horseshoe mouths are connected with the horseshoe; the locking hooks are positioned at the back of the horseshoe, arranged on the saddle body through pressure plates and matched with neck parts below the root parts of the traction pins; openings of the horseshoe mouths are matched with the root parts of the traction pins, and the horseshoe mouths are detachably arranged on the horseshoe; the locking hooks are detachably connected with the pressure plates; the pressure plates are fixedly connected with the saddle body; the two locking hooks have the same thickness and are provided with bosses which have the same thickness and can make up height difference between the two traction pins and the pressure plates, the boss of the locking hook matched with the 50# traction pin is matched with the root part of the 50# traction pin, and the boss of the locking hook matched with the 90# traction pin is matched with the top of the 90# traction pin; and the thicknesses of the two horseshoe mouths are both matched with the 90# traction pin, and the two horseshoe mouths are different only in opening diameter. The interchangeable light saddle has the beneficial effects that, based on overall dimensions of the 50# traction pin and the 90# traction pin, two saddles can be interchanged by designing different horseshoe mouths and locking hooks; and meanwhile the horseshoe mouths and the locking hooks are wearing parts which require periodic maintenance and replacement, thus meeting the requirements of the international standard. The interchangeable light saddle has the advantages of light dead weight, high reliability and good interchangeability.