Briefly describe the purpose and content of community diagnosis.

Answer: ① The purpose of community diagnosis is to identify the main health problems and available resources in the community; Find out the influencing factors of community health problems; Determine the order of solving problems and formulate community health plans; ② The content of community diagnosis: including the natural environment of the community; Demographic characteristics of the community; The humanistic and social environment of the community; Community health status: community resources; Potential of community mobilization.