Most traditional network automation frameworks or tools face many difficulties in dealing with increasingly complex network management problems. They always hide the language they are written in by using some cumbersome pseudo-language but lack the tooling to debug and troubleshoot. Integrating with other systems is also usually quite hard as they usually have complex APIs. Therefore, this paper proposes a plug-in, high-concurrency, and high-reliability network automation platform architecture method which aims to solve those problems by providing a pure programming language framework and implementing it as an automated operation and maintenance software framework in the Python ecosystem. This framework will not only take care of dealing with the host information but also take care of dispatching the tasks to a batch of devices. Finally, through simulation experiments, the automated operation and maintenance software based on this method has obvious advantages over traditional tools in terms of flexibility, scalability and execution efficiency, and has good application prospects and promotion value.