蒙古语复合词具有句法结构的特点，类似词组（ｇｒｏｕｐ）而又不同于词组。如何区别它们的异同，不仅是个理论问题，也是一个实际问题，文章认为只有从语法、语义和语用三者的结合上进行探讨，才有可能解决问题。 Mongolian compound words have the characteristics of syntactic structure, similar to the group (group) but different from the phrase. How to distinguish their similarities and differences is not only a theoretical problem but also a practical one. The article holds that it is only possible to solve the problem by exploring the combination of grammar, semantics and pragmatics.