1. For the completeness of the explanation or paper, but it is harmful to the processing and logic of the text when compiled into the text, such materials include more detailed descriptions of information research methods and technologies than the text, which is of important supplementary significance for understanding the main content;

2. Materials that are inconvenient to be included in the text because they are too large or the materials come from replicas;

3. Some important raw data, mathematical derivation, calculation programs, notes, block diagrams, statistical tables, printer output samples, structural drawings, etc.

The format of the appendix of the paper:

1. The appendices of the specification or paper are numbered as Appendix A, Appendix B and Appendix C in turn. If there is only one appendix, it should also be compiled as "Appendix A".

2. The naming method of figures, tables and formulas in the appendix also adopts the naming method of the above figures, tables and formulas, except that the serial number of the chapter is changed to the serial number of the appendix.

3. Attached Figure A.5 is the fifth figure representing Appendix A, etc.

Content reference of the appendix of the paper:

1, communication information-If your research is cooperation with others, the appendix can include letters, memos, emails and copies of letters interacting with partners.

2. Interview records-In qualitative research, written and non-written interviews including maps, photos, icons and other images can be placed in the appendix.

3. Questionnaire or survey-this is a common data collection method. Putting it in the appendix will help readers understand the detailed information of the questions, the order of the questions and the differences between the questionnaires distributed to different groups.