Suitcase with accommodating cavity at the back of case body

Disclosed is a suitcase with an accommodating cavity at the back of a case body, comprising a case body (1), a pull rod (2) and rollers (4), wherein an accommodating cavity (5) is formed at the back of the case body (1), an adhesive cover (7) for covering the accommodating cavity (5) is arranged on the surface of the accommodating cavity (5), the rollers (4) are detachably connected to the case body (1), the accommodating cavity (5) is internally provided with roller grooves (6) for storing the rollers (4), the bottom of the adhesive cover (7) is fixedly connected to the bottom of the accommodating cavity (5), the face of the top of the adhesive cover (7) facing the case body (1) is provided with a first Velcro tape (8), an inner stopping piece (9) is arranged at the top of the accommodating cavity (5), and the side of the inner stopping piece (9) away from the case body (1) is provided with a second Velcro tape (10) matched with the first Velcro tape (8). The accommodating cavity of the suitcase is used to store detached rollers or a charger.