As an important media platform, the topic selection of the official account of campus WeChat is very important. Proper topic selection can attract the attention of the target audience, provide valuable information and enhance the influence and popularity of the official WeChat account. When choosing a topic, we need to consider the following aspects:

1. Hot topics: Choosing hot topics related to students' lives can arouse readers' interest and discussion. For example, campus activities, academic lectures, community activities and so on.

2. Practical information: provide some practical information and skills to meet the needs of students. For example, learning methods, career planning, internship and employment.

3. Culture and art: introduce campus cultural activities, art exhibitions and music performances to enrich students' campus life.

4. Academic research: introduce some cutting-edge academic research achievements and subject knowledge to improve students' academic literacy.

5. Mental health: Pay attention to students' mental health problems and provide relevant psychological counseling and guidance.

Of course, the above are just some common topics, and the specific choice needs to be determined according to the needs of the target audience and the positioning of the official WeChat account. When choosing a topic, you can also refer to relevant research and literature, such as the principle of choosing a topic mentioned in Mass Media and Social Psychology (Author: Lu Xun) and the relevant viewpoints in Media and Communication Theory (Author: Fu Lei).

I hope the above answers are helpful to you.