The upper left corner of the statistical table is called the header, which is the beginning of the table and is used to classify the nature of some problems. Traditionally, each questionnaire should reflect the general situation of the respondents, such as their gender, age, education level, income, family members, political background, economic situation and so on. This kind of question is usually arranged at the beginning of the questionnaire, which is called "header". The header design should be different according to the different investigation contents, and the items listed in the header are indispensable basic items when analyzing the results.