证券应该按照体系化的分类思路分为四个层级:第一层级为证书和广义证券;第二层级上的广义证券再分为特殊证券和有价证券;第三层级上的有价证券分为物品证券和狭义有价证券;第四层级上再区分为资本证券和货币证券。不同的分类方式只能在相应的层级上适用。通过证券类别和分类的体系化,可以准确地描绘各种证券的性质。 Securities should be divided into four levels according to the systematic classification idea: the first level is the certificate and generalized securities; the second level generalized securities are further divided into special securities and securities; the third level of securities is divided into Goods and special securities; fourth level and then divided into capital securities and currency securities. Different classification methods can only be applied at the corresponding level. By systematizing the types and classifications of securities, the nature of the various securities can be accurately depicted.