Flavone derivatives, preparative method of the derivatives and use thereof as medicaments for treating diabetes. The structure of the derivatives is presented by formula 1: In the structure, R1 and R2, which are identical or not, represent hydrogen atom, halogen, cyano, hydroxyl, trifluoromethyl, thio-methyl, benzyloxy. C1-C8 linear chain or branch chain alkyl, C1-C8 linear chain or branch chain alkoxy. The pharmacological test indicates that the flavone derivatives can significantly increase the glucose consumption of Hep-G2 cell with insulin resistance activity, promote translocation of glucose transporter 4 of skeletal muscle cells (L6GLUT4myc) at different level, and significantly increase glucose intake and utilization by cells. The test proves the fact for the first time that the flavone derivatives can significantly promote translocation of glucose transporter 4 of skeletal muscle cells, and one of the mechanisms for treating diabetes is activating the cell AMPK phosphorylation and phosphorylating the downstream ACC.