1. Closed question: In the questionnaire, some answers are provided while asking questions, and the respondents choose the answers according to their actual situation.

2. Open-ended questions: Respondents are required to give their own answers without setting any alternative answers or tips for reference.

Second, the use is different.

1. Closed-ended question: Specific and sharp, which can make the conversation deeper, break through some difficulties and confirm or verify some questions, so it is used in the main and key stages of the interview.

2. Open-ended questions: It can make the atmosphere natural and harmonious, show respect for each other, and avoid letting go of good materials because the reporter's questions are too limited, so it is often used at the beginning of an interview.

Third, the advantages and disadvantages are different.

1. Closed question: it is convenient to fill in and answer, saving time and effort, and the obtained data is also convenient for statistical analysis. Disadvantages: the answers should conform to the objective reality, and the design of major cases should include all possible situations as far as possible. The answers to multiple-choice questions cannot be included or overlapped with each other, and the same group of answers can only be classified according to the same standard. The answers to the degree should be arranged in order and symmetrical before and after.

2. Open-ended questions: It is difficult for survey organizers to analyze the answers given by respondents; In the case of interview, it is sometimes difficult for investigators to accurately record the answers to images; In the case of self-filling questionnaire, this kind of question can easily annoy the respondents and even give up cooperation.

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