The invention discloses a switch with a trigger, which comprises a switch body and a trigger, wherein the switch body comprises a binding post, an insulating cover plate, a metal shell, a pair of air nozzles, a columnar insulator, an export pole, an upper electrode base, an upper electrode sleeve, an upper graphite electrode, a lower electrode base, a lower electrode sleeve, a lower graphite electrode, a ceramic pipe and a trigger pin; and the trigger comprises a trigger slot, a trigger output electrode, a grounding metal ring, and a functional display panel. The binding post is arranged at the center of the insulating cover plate, the insulating cover plate is connected with the metal shell to form a sealed chamber used for electrically partitioning the binding post and the metal shell, the air nozzles are symmetrically arranged on the side of the metal, and are used for charging and discharging the switch body with gas, the columnar insulator is fixed to the bottom of the switch body, the export pole penetrates through the columnar insulator along the axial direction, and the upper electrode base is connected with the insulating cover. The switch disclosed by the invention can solve the problem that a three-electrode trigger pipe type switch is electrically connected with the trigger. Moreover, the switch is compact in structure.