Mind map can help product managers to sort out a lot of disordered product ideas, and can also help product managers to carry out demand management, product analysis, etc. Product managers will use mind mapping to effectively analyze product ideas, sort out product logic, and then draw prototype diagrams. An excellent product manager is not only able to draw prototypes and write requirements documents, but also to make products that users are satisfied with. In the process of product iteration, the product manager also plays the role of project manager. Establish and improve the project operation mechanism, including the whole project process, requirements undertaking process, requirements change process, requirements involved, requirements clarification, development process, integration process, test process, deployment and launch, etc.