The utility model discloses a pressure vessel drunkenness detects magnetic force switch, it belongs to pressure vessel drunkenness detection area, adjust the part including magnetism force sensor subtotal, magnetism force sensor part realizes position adjustment through adjusting the part, magnetism force sensor part is equipped with rectangular induction zone, be equipped with a plurality of sensing element in the rectangular induction zone, magnetism force sensor part is including the bench insulator, at least, be equipped with two recesses along the response direction in the bench insulator, sensing element sets up in the recess, the recess top of bench insulator is equipped with the apron, sensing element establishes to the sheetmetal, apron and sensing element connect detection circuitry's positive negative pole respectively, it takes place behind the axial float to roll up the system barrel in the testing process, because the induction area of magnetism force sensor part is longer, little axial float is still in the detection length range of magnetism force sensor part, can not influence the receipt of its signal again, can in time avoid the accumulated error.