This article is reproduced from the public number "Fire Fighting Plus" of Weixin. Author Xiao Kuikui and Yiou Smart City edited the article twice for readers'reference. Fire protection is a very professional industry. Normally, it is difficult to enter in a short time without certain industry experience. However, with the deepening of intelligent fire protection construction, giant enterprises such as Ali, Baidu, Tencent and Huawei have entered the border one after another. In the process of fire industry transformation, why can these cross-border enterprises enter quickly, and what is their strategic and tactical layout after entering, and how to deal with them as the original fire enterprises? As one of the representative cross-border enterprises, Huawei may find some references by analyzing its strategy and layout in the field of intelligent fire protection. First of all, what is Huawei's reason for entering the field of intelligent fire protection? 1. Intelligent City Business Extension from the business level analysis, Huawei into the field of intelligent fire protection, is wisdom in the process of building a smart city.