流行病学重要工作之一就是找出疾病的分布 ,确定高危人群及相关的高危险因素。在以往的实际工作中 ,常常靠人工制图或应用一些简单的软件 ,往往效率不高。随着科学技术和信息技术的发展 ,流行病学工作面临着新的机遇和挑战 ,目前一种全新的研究手段———“3Ｓ”在流行病学领域 One of the important epidemiological tasks is to find out the distribution of the disease, to identify the high-risk groups and the related high-risk factors. In the past, the actual work, often by drawing or using some simple software, often inefficient. With the development of science and technology and information technology, epidemiological work is facing new opportunities and challenges. At present, a completely new research means --- “3S” in epidemiology