In 2017， China's mobile application market developed rapidly， occupying the leading position in the entire global mobile application market， while mobile users have also increased stably. In the market segment， applications such as WeChat and Microblog have broadened the service boundaries as well as the market in aspects such as sharing economy， mobile games， short videos， all of which have risen rapidly with application development， distribution， marketing and the other services have constantly improved. The vertical domain of mobile applications is increasingly standardized and the opportunities and challenges of the mobile application security market coexist. Under the promotion of AI， 5G and other innovative technologies， the mobile application market in China will continue to develop under the promotion of AI， 5G and other innovative technologies.