The utility model discloses a have new tool case of function of ascending a height concurrently, it mainly includes box (1), case lid (10), it still includes drop -down support (2) its characterized in that, the both sides face of box (1) is fixed with a set of plug (3), plug (3) are including operating handle (5), steel core (8) is connected in operating handle (5), steel core (8) overcoat has ring (7), circular operating handle (5) are connected through spring (6) in ring (7), the both sides face at box (1) is fixed in ring (7), the both sides of drop -down support (2) are equipped with two tubulose cross arm (4) respectively, the middle part of every cross arm (4) all is equipped with plug jack (9) of a cooperation plug bore, through the slide sliding connection in box (1) between box (1) and drop -down support (2), and insert plug jack (9) internal fixation through steel core (8) of plug (3), the utility model discloses simple structure, carry convenient to use, mechanical strength increase, firm stable, improve work efficiency.