Abstract: There are two goals in the research on the Chinese natural language queries: First, to solve the portable and usable problem in NLIDBs; and second, to present a novel mechanism adapting to Chinese natural language queries. Described in this paper are the design and implementation of NChiql, a Chinese natural language interface to databases. Also discussed are the natural language query structure analysis and its processing in NChiql. The main contribution of NChiql is depicting a novel method based on database semantics to handle the Chinese natural language query. The experiments show that NChiql has good usability and high correctness.