1) Extract keywords according to the title of the paper. In fact, the title of the paper not only explains the content of this article, but also expresses the core idea of the article. The function of the paper is to solve practical problems, so it is functional, and keywords are an important basis for others to search. Therefore, the setting of keywords can be extracted from the topics of literary theory, such as clinical practice teaching research, and practical teaching can be extracted.

(2) Extract keywords according to the topic of the paper. The theme of the paper also means what the paper is going to demonstrate and the direction of research. This direction is the key. Whether it is your argument, hypothesis or final opinion, it can be used as a key word.

(3) The design length of keywords should be between 3 and 8 words, side by side at the lower left of the abstract. In order to meet the needs of document indexing or retrieval, the words or phrases selected from papers generally require certain specifications. If there are words or not included in relevant documents, they should not be selected. In addition, the number of keywords is generally between 3 and 5.

(4) The article keyword extraction should be selected according to the key degree, preferably not too concentrated. There are many keywords in a paper, because the number of words in the paper is large, the amount of information is also large, and there are many related contents. Therefore, it is not easy to choose keywords. You can sort roughly according to the degree of key, and choose the most key words. At the same time, the key must not be repeated in an article, otherwise choosing a suitable degree will be biased, and it is best to distribute it throughout the article.