1. It is necessary to have solid theoretical knowledge of environmental engineering, and make breakthrough achievements in drinking water safety, domestic sewage treatment from scattered point sources, air purification in human settlements, etc.

2. It needs innovation. During the doctoral period, it is necessary to carry out a lot of experimental research and publish high-level academic papers.

3. Need to have some practical experience, need to participate in practical engineering projects during the doctoral period, and apply what you have learned to practice.