The invention relates to a gliclazide controlled release tablet composition, which comprises effective dose of gliclazide and polyoxyethylene, and optionally one or more pharmaceutically-acceptable adjuvants. The invention also relates to a gliclazide controlled release tablet, which comprises a core, a coating film coated on the core and drug release pores opened at one side of the tablet, wherein the core contains gliclazide and polyoxyethylene and optionally one or more pharmaceutically-acceptable adjuvants; and the coating film is a semipermeable film.