This course mainly uses online software to develop Android mobile application APP. The purpose is to enable students to understand the basic structure of mobile phone applications, and to develop simple practical software to assist the basic functional requirements of professional work. The main outline of the course is as follows: Introduce the APP development environment and interface operation methods of mobile phone applications. Teach students to complete three project tools. Project tools are professional auxiliary tools that add additional design to common tools: engineering and professional requirements computer, positioning record tool, and work notebook record tool. Complete a small project using the specified function to create a personal common practical requirement project as the final implementation project.