The invention discloses a method and a device for automatically sending detonator bodies into a bayonet device. The method comprises the following steps: arranging the detonator bodies in a special temporary storage box, locating by a mechanical clamping device, inserting a jacking push plate into the box bottom, jacking up one row of the detonator bodies into a gap formed by two flat plates, pushing the row of the detonator bodies towards the horizontal direction by virtue of another flat push plate, sending the row of the detonator bodies into sliding plate preset grooves which carry out linear motion, after a sliding plate is in place and stops, drawing out the row of the detonator bodies from the sliding plate by virtue of a manipulator, and translating the row of the detonator bodies into a group sending bayonet device. The device comprises a box entering mechanism, a box translation locating device, a box exiting mechanism, a whole row pipe body jacking mechanism, an elastic flat pushing mechanism, a sliding pipe arranging mechanism, a translation manipulator, a mounting workbench and an automatic control device. According to the method and the device disclosed by the invention, unmanned operation of hazard stations and man-machine separation is realized, multiple detonator bodies can line up and be put into the bayonet device at one time, and the efficiency is very high; meanwhile, the method and the device have the characteristics of simple structure and high performance-price ratio and is worthy of vigorous popularization.