The invention provides a kind of erdosteine composition, described compositions is grouped into by following quality: 130~170 parts of erdosteines, 35~65 parts of lactose, 30~70 parts of microcrystalline Cellulose, 20~40 parts of low-substituted hydroxypropyl celluloses, 1~5 part of acesulfame potassium, 10~30 parts of carboxymethyl starch sodium, 0.1~0.5 part of magnesium ...