The invention discloses an adjustable storage cabinet that comprises a cabinet body, a cabinet door, transverse plates, longitudinal plates, fixing strips and bolts, wherein the cabinet door is mounted on the cabinet body; a plurality of horizontal transverse plates are arranged in the cabinet body from top to bottom; two fixing strips matched with the transverse plates are arranged below each transverse plate; the two fixing strips are fixed to the inner walls of the two sides of the cabinet body respectively, a plurality of vertically-arranged threaded holes are formed in the fixing strips,the bolts are screwed into the threaded holes, the bolts are screwed into the fixing strips from the lower portions of the fixing strips and penetrate through the fixing strips, and the top ends of the bolts make contact with the lower end faces of the transverse plates. According to the adjustable storage cabinet, the movable transverse plates and the movable longitudinal plates are combined, sothat the storage intervals in the storage cabinet are adjustable, and the storage cabinet has better adaptability and adapts to different storage requirements.