1. For those who write a scientific paper for the first time, the topic of the paper should not be too big, the length should not be too long, the issues involved should not be too wide, and the issues discussed should not be too deep. We should put forward some new ideas on the basis of predecessors' knowledge as much as possible.

2. The second step, the topic of the paper can be bigger and deeper. The topic of the paper can focus on a certain point, such as an important side of an important issue or the focus of a current issue, which solves this point and is of great significance to promoting the overall situation.

3. Have original opinions on the basic problems and important difficult problems of this major, which will promote the improvement of the academic level of this major.

4. Having profound and extensive knowledge in related fields of a subject, and being able to use this knowledge to provide creative insights for a subject, has an important role in promoting the development of the subject, or has an important breakthrough in improving the level of the subject.

5. Note that it is not necessary to pursue a comprehensive discussion to write a big problem. The topic you write can be small but important. Actually, there are many topics. Choosing topics that you are familiar with and engaged in and are beneficial to your future work can not only sum up the gains and losses of your work, but also promote the development of your work.