对人群健康状况的评估是社会医学的最根本的任务。要不断的改善人群健康状况,就必须经常对不同人群、不同国家和民族进行健康调查分析,从中找出造成健康状况差异的原因,以便采取相应的卫生对策,这就是研究社会医学的目的。这里需要指出的是要研究人群健康也必须从个体开始,进而推测到群体。个体健康是受社会因素、自然条件影响的生物现象。研究个体健康只用 Assessment of the health status of the population is the most fundamental task of social medicine. To constantly improve the health status of the population, we must constantly conduct health surveys and analysis of different groups of people and different countries and ethnic groups to find out the causes of the differences in health conditions so as to adopt appropriate health measures. This is the purpose of researching social medicine. What needs to be pointed out here is that to study the health of the population, we must start from the individual and then infer the group. Individual health is a biological phenomenon influenced by social factors and natural conditions. Study individual health only