In this paper,a new type of high temperature resistant powder coating was prepared by melt extrusion method with epoxy resin E12 as base material,silicone resin TC03,high temperature resistant curing agent TC04 and fller.The powder coating can be resistant to 250 C in muffle furnace by optimizing the filler type and dosage and improving the coating formula effectively.In this paper,the impact resistance test,coating adhesion test,acid and alkali resistance,solvent resistance,water resistance and other properties of the prepared powder coating were tested to verify the rationality of the formulation,and the properties of the coating were characterized by differential scanning calorimetry(DSC)and thermogravimetric analysis(TG),the curing temperature at the optimal process parameters is 149℃.