Abstract: Provided is equipment for switching a suitcase into a backpack in which a strap is attached to the suitcase and a shoulder strap is attached to the strap, thus allowing the suitcase to be carried over the shoulders when moving on stairs, an uneven road or the like and consequently having convenience and safety when carried. The equipment includes a longitudinal strap wrapped around a longitudinal circumference of a central portion on an exterior of the suitcase; a transverse strap wrapped around a transverse circumference of a lower portion on the exterior of the suitcase to cross the longitudinal strap at a front surface and a rear surface of the suitcase; and a pair of shoulder straps detachably connected to the longitudinal strap and the transverse strap to allow the suitcase to be carried over a user's both shoulders.