In this paper, we introduce experiment results of a Vietnamese sentence parser which is built by using the Chomsky's subcategorization theory and PDCG (Probabilistic Definite Clause Grammar). The efficiency of this subcategorized PDCG parser has been proved by experiments, in which, we have built by hand a Treebank with 1000 syntactic structures of Vietnamese training sentences, and used different testing datasets to evaluate the results. As a result, the precisions, recalls and F-measures of these experiments are over 98%.