With the increasing popularity of mobile internet applications， especially mobile social networking， mobile payment systems， users have gradually put more and more of their personal data and wealth into mobile platforms therefore making mobile security more and more important. This integrative use of the 360 Internet Security Center for the Android platform while doing research accomplished analysis of risks and challenges within China's mobile security field during 2017 in three aspects including system vulnerabilities， malware and phishing sites. It has also clarified development trends within mobile security risk areas for the purpose of advancing and dealing with problems.