彝语的结构助词多数由实词虚化而来。有的结构助词的虚化经历了较大变化，因而已很难从弱化了的语义上联想到初始的实在义。有的结构助词的初始义与弱化了的空泛义处于一个共时平面，各有其使用范围，其实在义与空泛义之间的联系较为明显。从实在义到只有语法义的虚化过程不是一次完成的，而是连续渐变的过程，并呈现出层次。不同层次的虚化不仅在语法功能上表现出不同的特点，而且在语义上也有不同点。 Most of Yi’s structural auxiliary words come from the real words. Some structural particle has undergone great changes in the blurring, it has been very difficult from the weakening of the semantic association to the initial real meaning. The initial meaning and the weakened empty meaning of some structural auxiliary words are in a synchronic plane, and each has its own scope of use. In fact, the connection between righteousness and empty meaning is more obvious. From the real meaning to the only grammatical meaning of the virtual process is not a complete, but a gradual process of gradual change, and showing the level. Different levels of virtualization not only show different features in the grammatical function, but also have different semantics.