In modern society, explosion-proof gun plays a significant role, which scope of application has become more and more extensive that has a particular role in deterrence and suppression. As a product that reflects the public image of the government, it should not only reflect a certain degree of deterrence but also not be too publicised and violent. Therefore, the designer proposed the product semantics of "restraint deterrence" and intented to simplify the complex gun details through the integration of forms. At the same time, it also created an image of “approachable to civilians” through the strong and soft line design which strengthen the boldness of the product.