There are a lot of word order errors that occur in the Chinese-Mongolian statistical machine translation system, so we proposed Chinese sentence reordering method based on the Mongolian word order. In this paper we first introduce the form and the tagset of reordering rules. We mainly introduce the reordering rules related to the verb phrase, prepositional phrase and subject-predicate phrase. Finally, we give out the experimental results. It is proved by experiment that the performance of the Chinese-Mongolian machine translation system can be improved using these reordering rules.