1. Face-to-face interview: a data collection method in which investigators communicate face-to-face with respondents to obtain the required information.
2. Questionnaire survey: By designing a questionnaire, respondents can fill in it to collect their nutrition and health information.
3. Physical examination report and laboratory report: collect residents' physical examination report, laboratory report, personal health history, lifestyle and other related health information, and establish comprehensive health electronic files of community residents for lifelong preservation.