Ammunition counting device and method and magazine

The invention relates to the technical field of bullet safety management, and discloses an ammunition counting device and method and a magazine, and the device comprises a numerical calculation module which is used for obtaining a first quantity value corresponding to the unit weight of a set weight; the numerical value configuration module is used for configuring a second quantity value corresponding to the unit weight of the ammunition; the weight acquisition module is used for acquiring the first detection weight of the magazine in real time after the ammunition is put into the magazine in the use process of the magazine; and the counting acquisition module is used for acquiring the ammunition quantity in the magazine according to the first quantity value, the second quantity value, the first detection weight and the tare weight value of the magazine. According to the ammunition counting device, the ammunition quantity can be simply and accurately obtained, so that the difficulty of automatic counting work