NOVELTY - A gallium selenium copper indium film solar battery material two-step synthesis performing method involves preprocessing a raw material that is high pure nitrogen material, cleaning high purity copper by using hydrochloric acid and nitric acid, and processing the obtained material. The obtained material is washed with de-ionized water and infrared dried for further use. Hydrochloric acid solution is utilized to wash high purity indium into fine particles. The obtained material is taken out from a furnace, naturally cooled to room temperature and packed in a vacuum plastic bag.    USE - Method for performing two-step synthesis of a gallium selenium copper indium film solar battery material.    ADVANTAGE - The method enables preparing the gallium selenium copper indium film solar battery material with improved stability and safety.    DETAILED DESCRIPTION - A gallium selenium copper indium film solar battery material two-step synthesis performing method involves preprocessing a raw material that is nitrogen (5N) (99.999%) high pure material, cleaning high purity copper by using 10% hydrochloric acid and 1% nitric acid, and processing the obtained material for 3 minutes. The obtained material is washed with de-ionized water and infrared dried for further use. 10% of hydrochloric acid solution is utilized to wash high purity indium into fine particles. Ethanol dehydration and infrared drying are performed on the washed material. 15% of ammonium oxide solution is utilized to wash high purity gallium by de-ionized water. Pure selenium with agate mortar is ground into powder. An alloy (Cu1InxGa1-X) i.e. CuIn0.666Ga0.333 alloy, is melted, where mass ratio of copper, indium and gallium is equal to 1:0.666:0.333. A vacuum intermediate frequency induction furnace is smelted with frequency of 2500HZ, heating power of 40kW, vacuum degree of 1- 6.7x 10-3Pa, the smelting temperature of 1000-1100 degrees C and the smelting time for 1-2 hours. A high purity graphite crucible is synthesized with CuIn0.666Ga0.333 alloy. The selenium in an inner tube is pumped to vacuum degree of 10-2Pa, and a sealing tube is fed into the furnace to be heated according to strict time temperature curve, where highest temperature is 750 degrees C and time is 5 hours. The obtained material is taken out from the furnace, naturally cooled to room temperature and packed in a vacuum plastic bag, where the vacuum degree is 10-1Pa.