NOVELTY - Vacuum filling resin, comprises (in wt.%): Component A containing organic silicon modified epoxy resin (10-30), epoxy resin mixture (30-70), diluting agent (10-30), defoamer (0.5-1.5) and coupling agent (0.5-2.0) and a component B containing aliphatic polyamine (45-69), alicyclic amine (30-50), accelerating agent (0.5-5.0) and dye (0.01-0.20). The parts by weight ratio of the component A to the component B is 100:33-27.    USE - Vacuum filling resin used for wind power generation vanes (claimed).    ADVANTAGE - The vacuum filling resin enhances the ductility, water and temperature resistance of the epoxy resin composition and the saturating property of the epoxy resin and glass fiber, and prolongs the operation time.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for preparing vacuum filling resin which involves:    (A) preparing organic silicon modified epoxy resin by putting epoxy resin and amino silicone oil to a spiral agitator, and agitating it quickly for 20-30 minutes at a rotating speed of 1000-1500 revolutions per minute;    (B) adding the mixture to a reaction kettle and heating it at 100-150 degrees C, and agitating it for 2-3 hours quickly;    (C) preparing the component A by adding the organic silicon modified epoxy resin, epoxy resin mixture, diluting agent, defoamer and coupling agent to the reaction kettle according to the mixing ratio of the materials of component A, and heating the kettle until it is at 40-80 degrees C;    (D) agitating the kettle for 3-4 hours in vacuum, and cooling it;    (E) bottling it in a packing bottle, and sealing it for storage;    (F) preparing the component B by adding aliphatic polyamine, alicyclic amine, accelerating agent and dye to the reaction kettle according to the mixing ratio of the materials of component B, and heating the kettle until it is at 40-60 degrees C;    (G) agitating the kettle for 3-4 hours in vacuum, and cooling it; and    (H) bottling it in a packing bottle, and sealing it for storage.