Abstract: A bearing structure includes a fixing member attached with respect to an arm of a surgical robot in a state in which a holder that is provided at a distal end of the arm is inserted inside the fixing member, a first drape that covers the arm being attachable to the fixing member, and a rotating member attached with respect to the fixing member in a slidably rotatable manner in a state in which the holder is inserted inside the rotating member, a second drape that covers the holder being attachable to the rotating member. The rotating member is rotatable together with the holder.