Abstract: A personal descent apparatus for evacuating occupants from a high elevation of tall building under emergency. The personal descent apparatus comprises a pair of supporting plates connected to each other front and rear with a predetermined gap, braking rods rotatably fixed to the pair of supporting plates in the predetermined gap between the pair of supporting plates, the braking rods form a passage which is formed by two guide grooves each of which is tapered and formed at arc ends facing to each other, so that a rope is inserted to the passage, and weight receiving means connected to both ends of the braking rods for receiving a load, wherein the braking rods are rotated by the load.