随着市场经济和国际化程度的不断发展和扩大，政府对宏观经济的监管调控日益加强，作为核算宏观经济总量的核心的指标，国内生产总值也日益受到各级政府部门的重视，它既能体现一个国家（或地区）的综合实力，又能反映人民生活水平，同时也是评价小康标准的核心指标，因此，为了加强国民经济核算，提高统计数据质量，准确计算国内生产总值指标极为重要． As the market economy and the degree of internationalization continue to develop and expand, the government regulates and supervises the macro-economy increasingly. As an indicator of the core of the total macro-economy, the GDP has also been increasingly valued by government departments at all levels. Therefore, in order to strengthen the national economy accounting and improve the quality of statistical data, it is very important to accurately calculate the index of GDP so as to reflect the comprehensive strength of a country (or region) as well as the standard of living of the people as well as the core index for evaluating the standard of well-being of the people. important.