Aiming at the handwork stab detonators, put forward the stab detonator automatic assembly production line. Introduce the general scheme and system construction of stab detonator. The assembly line mainly produces the XX stab cap and XX stab detonator. The system includes belt transmission line, two dipper charging machines, and a metering pale charging machine, five pressing machines and two tapering press machines and a casting machine. The assembly line runs well and acquires sufficient benefit. It also can be used to the charging and pressing for other similar products.