What kind of research, product or project do you do? The basic point in the early stage of research is to make clear what kind of research object you are investigating. If it is in the form of a questionnaire, then you should be fully prepared. First of all, what is the purpose of your research, or what information do you need most? In addition to the basic consumer information that must appear in the questionnaire, what other information will have an impact on your product? For example, if you go to a kindergarten to make preschool education products, then first of all, you should make it clear that your research object should be the parents of infants. Secondly, you need to know the parents' recognition of preschool education products, and so on, in the form of questions. And the questionnaire must be simple and clear. No one will fill out a questionnaire for you to read for half a day in this hot day. The last point is that you should be fully prepared. If the respondents ask relevant questions and don't know, it will greatly affect their mood. Do more specific work, and you will gradually understand.