The invention relates to a glimepiride aqueous solution administration system and a preparation method thereof, which belong to the technical field of medicaments. A glimepiride aqueous solution preparation consists of an active component glimepiride and a pharmaceutically acceptable adjuvant, and each 100 milliliters of the preparation contains 0.1 to 10 grams of the glimepiride, preferably 0.1 to 5 grams, and most preferably 0.1 to 2 grams. The glimepiride aqueous solution administration system and the preparation method have the advantages of successfully solving the problem that the glimepiride is extremely difficult to dissolve, and greatly improving the stability of a solution through a series of prescription screening works. The system or a composition performs administration in a sublingual spraying mode to avoid the action of alimentary canals, the reactions of gastrointestinal tracts and the liver first pass effect; besides, the system or the composition has quick response and high bioavailability, is particularly suitable for controlling the postprandial blood sugar, and can be used for treating the type 2 diabetes which cannot be appropriately controlled by dietary restriction and sports. The system or the composition also has the following advantages that: the use is convenient, the dosage can be adjusted as required, the compliance is good, the system or the composition is particularly suitable for old people and the patients who cannot swallow conveniently, the preparation process is simple and practicable and is suitable for industrial production, and the like.