In the mobile Internet era，the continues change of information technology forces the traditional banking to upgrade their service so as to constanly adapt to the trend of moblile development. The banking service App is the carrier of banking service transformation，which affords traditional financial service and emerging financial financial information service and has become a vital platform for consumer consumption and wealth management. This chapter starts from analyzing the major types and functions of banking services App in China. Then we elaborate the current development pattern and service condition of banking service App based on the mobile service，direct banking and credit card service. The innovative practice and effectiveness of banking services App are also expounded. Finally we point out the development dilemma and advancement measures of banking service App in China.