Abstract: English abstracts of scientific papers are an important means to retrieve documents and promote international scientific and technological exchanges. Information abstracts are usually used in scientific papers, including research background, purpose, methods, results and conclusions, with emphasis on methods, results and conclusions. Writing should follow the principle of objectivity and truth, and avoid subjective comments and emotional colors. 1. The writing method of information abstract expresses the main points of the paper, is the concentration and expression of the content of the paper, and is the main form used in foreign language literature retrieval. English abstracts of scientific papers follow the linguistic features of accuracy, objectivity and conciseness, and must be concise, focused and complete in content. According to the organizational structure of scientific papers, abstracts usually include five aspects: background, purpose, methods, results and conclusions: background sentence: introducing research background, current situation and problems, often using the present tense. Purpose sentence: describe the premise, purpose, task and the scope of the research, often in the past tense. Method sentence: state the principle, object, material, technology, means, procedure, etc. Used for research, often used in the past tense. Result sentence: state the result, data, effect, performance, etc. The past tense is often used in the study of. Conclusion sentence: state the analysis, comparison and application of the research results, or put forward questions, suggestions and predictions according to the results, often using present tense or modal verbs.