中文摘要：

随着全球贸易增速的放缓和关税水平的降低,应对非关税措施已成为贸易自由化的重要议题。由于隐蔽性和复杂性等特性,非关税措施的分类不尽相同且其影响难以直接量化,这使其极易成为贸易保护主义的工具。非关税措施的量化方法主要包括比率指标法、价格比较法、贸易流量法和一般均衡法。比率指标法是其他方法的计量分析基础,能衡量国家和产业层面的非关税措施的影响;价格比较法能直观地展示非关税措施对价格的影响;贸易流量法大多以引力模型来研究非关税措施对贸易流量的影响;一般均衡模型可以模拟非关税措施对生产和消费的影响。数据是非关税措施量化研究的基础,众多国际机构最新的公开数据库可以满足国内研究者的基本需求。

英文摘要：

With the slowdown in global trade growth and the reduction of tariff rates,dealing with non-tariff measures has become an important issue of trade liberalization. Due to its characteristics of complexity and confidentiality,Classification of non- tariff measures vary and it is difficult to directly quantify its impact which have become a tool of trade protectionism. There are four main methods to quantify non-tariff measures which are ratio indexes,price comparison,trade flow and general equilibrium method. Ratio indexes are the basis of other econometric analysis and are used to estimate the impact of non- tariff measures on national and industrial level; Price comparison can intuitively show the impact on prices; Trade flow method is used to study the influence of the non-tariff measures on trade flows by gravity model; General equilibrium model can simulate the impact on the production and consumption. Data is the foundation of quantitative research of nontariff measures,and the latest public databases of international agencies can satisfy the basic needs of the domestic researchers.