Disclosed is a class of flavone glycoside derivatives, compounds of structural general formula (I) described below or pharmaceutically acceptable salts or hydrates thereof, comprising racemates, optical isomers and epimers thereof. Also disclosed are a method for preparing the flavone glycoside derivatives and a use thereof in preparing drugs for treating diabetes. The flavone glycoside derivatives of the present invention are used to prepare drugs for treating diabetes, and have a relatively good inhibition effect on alpha-glucosidase, thereby slow down the decomposition rate from starches to glucose and the intestinal absorption of glucose, so lower postprandial hyperglycemia, improve the activity of such compounds for treating diabetes, and have less toxicity. Their physicochemical properties are more suitable for pharmaceutical preparations for treating diabetes, thus can be used for preparing drugs for treating diabetes which have better efficacy and higher safety. In their preparation method, the steps are simple, raw materials are readily available, the product yield is high and the purity is good. The flavone glycoside derivative can be prepared into various pharmaceutical preparations for treating diabetes.Linvention concerne une classe de dérivés de glycosides de flavone, de composés ayant la formule générale développée (I) décrite ci-dessous, ou de sels ou hydrates pharmaceutiquement acceptables de ceux-ci, y compris les racémates, les isomères optiques et les épimères de ceux-ci. Linvention concerne aussi un procédé de préparation des dérivés de glycosides de flavone et une utilisation de ces derniers pour la préparation de médicaments destinés au traitement du diabète. Les dérivés de glycosides de flavone de la présente invention sont utilisés pour préparer des médicaments destinés au traitement du diabète et ont un effet relativement bon dinhibition de lalpha-glucosidase, en ralentissant de ce fait la vitesse de décomposition damidons en glucose et lab
