Only very recently have Vietnamese re-searchers begun to be involved in the do-main of Natural Language Processing. As there does not exist any published work in formal linguistics or any recognizable standard for Vietnamese word categories, the fundamental works in Vietnamese text analysis such as part-of-speech tagging, parsing, etc. are very difficult tasks for computer scientists. All necessary linguistic resources have to be built from scratch, and until now almost no re-sources are shared in public research. The aim of our project is to build a common linguistic database that is freely and easily exploitable for the automatic processing of Vietnamese. In this paper, we propose an extensible set of Vietnamese syntactic descriptions that can be used for tagset definition and corpus annotation. These descriptors are established in such a way to be a reference set proposal for Vietnamese in the context of ISO subcommit-tee TC37/SC4 (Language Resource Management).