The invention discloses a rapid crushing and sampling gun, belonging to the technical field of food sampling equipment. The lower end of a sampling gun shell is connected with a battery; a driving motor is arranged in the sampling gun shell; the left side of the driving motor is connected with a direction-variable gear case through a central spindle; the left side of the direction-variable gear case is connected with a test tube through an outer spindle; the left side of the test tube is provided with a ventage; the left side of the ventage is provided with a sawtooth cutting head; a crushing, grinding and conveying stud is arranged in the sawtooth cutting head; and the central spindle penetrates the direction-variable gear case, the outer spindle, the test tube and the ventage and is eventually connected with the crushing, grinding and conveying stud. The rapid crushing and sampling gun is simple in structure and novel in design and carries out rapid extraction, crushing and loading of an article to be tested, so the pre-treatment speed of detection is increased and the burden of a tester is reduced.