Gun barrel having safety protection function and used for slapper detonator

The invention discloses a gun barrel having a safety protection function and used for a slapper detonator. The gun barrel is characterized by mainly comprising an upper gun barrel (1) and a lower gun barrel (2) which are connected with each other and have mutually communicated through holes (3) respectively, wherein a partition board (5) with a via hole (4) communicated with the upper gun barrel (1) and the lower gun barrel (2) and capable of moving is arranged between the upper gun barrel (1) and the lower gun barrel (2). The gun barrel not only has a simple structure, but also has low cost, and also can prevent the slapper detonator from being ignited accidentally to ensure the safety of the slapper detonator, thereby being suitable for popularization and application.