(Now the development of mobile application software on the Android platform is very widespread. All walks of life need to show their own industry advantages in the era of mobile Internet, and people can't live without the help of mobile application software. This course introduces the development of mobile accounting software based on the mobile platform. Because smart phones are portable, a large number of smart phone users have the demand for effective mobile accounting. This can be used to record various expenses in the day by category, which is helpful to understand their own consumption habits and characteristics. This course takes this project as the development content, based on the more sophisticated products currently used in the market, and introduces them step by step from the simple to the deep. Most of the code writing has been introduced accordingly, and strives to be specific, so that students can truly understand and master the technical keys.)