Portable post-poison fast detector

The portable post-poison fast detector comprises a mounting bin and a finger clip sensor, a first internal threaded hole is formed in one end of the mounting bin, a second internal threaded hole is formed in the end, close to the first internal threaded hole, of the bottom of the mounting bin, and a connecting bin is arranged at one end of the bottom of the mounting bin; an outer threaded ring matched with the second inner threaded hole and the first inner threaded hole is installed in the middle of the top of the connecting bin. An electric telescopic rod is controlled to extend, a connecting plate is pushed to descend, two sets of connecting rods drive a rubber piston to slide downwards, at the moment, a cavity above the rubber piston is in a negative pressure state, and an air exhaust bin communicates with the interiors of two sets of cylinders through connecting pipes, so that the air exhaust bin is also in the negative pressure state; in this way, the end, away from the first inner threaded hole, of the