A multi-functional storage box, comprising: a first body comprising a first bottom plate and a first side wall, wherein the first side wall is provided on the first bottom plate to form a first side opening; a second body comprising a second bottom plate and a second side wall, wherein the second side wall is provided on the second bottom plate to form a second side opening; the second side opening abuts against the first side opening, the first body and the second body are enclosed to form an upward-opening receiving cavity; one end and the other end of the second side wall respectively adjoins one end and the other end of the first side wall to respectively form a left and a right wall of the receiving cavity; a flipped cover connected to the left wall or the right wall of the receiving cavity.