大型普查是指在较大地域范围内,对含有较多调查单位的调查对象所进行的全面调查。搞大型普查目的是要取得有关总体全面的统计资料,为制定计划或政策提供可行依据。每项重要普查的成功与否,质量高低都直接关系到制定计划或政策的科学性和正确性,决定着社会与经济发展的健康与稳定,因此,要求普查的组织者必须确保工作的一次成功。但大型普查一般都具有涉及面广、调查单位多、调查内容广、技术性强、具体情况复杂、需花费较多的人力、物力、财力和时间等 Large-scale census refers to a larger area, the survey contains more units surveyed conducted a comprehensive survey. The purpose of a large-scale census is to obtain general and comprehensive statistical information and provide a viable basis for formulating plans or policies. The success or failure of each important census is directly related to the scientificity and correctness of the plan or policy. It determines the health and stability of social and economic development. Therefore, the organizer of the census must ensure the success of the work . However, large-scale censuses generally have a wide range of involved, survey units, survey content, technical strong, the specific situation is complicated, need to spend more manpower, material and financial resources and time