1, observation method: it is the most basic method of social investigation and market research. It is based on the object of investigation and research, and is investigated and collected by investigators in a direct way with eyes, ears and other senses.
2. Experimental method: According to the requirements of the investigation, the investigators control the investigated object under specific environmental conditions through experiments, observe and obtain corresponding information.
3. Query method: It can be divided into structured access, unstructured access and group access.
4. Questionnaire method: it is to get the information of the respondents by designing questionnaires and asking them to fill in the questionnaires.