The invention relates to a method for manufacturing a high-efficiency environment-friendly gas discharge lamp. The method comprises the following steps of: 1, forming a ball bulb in a quartz tube; 2, filing an electrode assembly into the quartz tube, and extending one end of a thorium tungsten electrode tip to the ball bulb; 3, hooping the quartz tube and a molybdenum foil of the electrode assembly; 4, putting the quartz tube into an inert gas box with water oxygen content of not more than 1ppm, wherein the box is connected with a vacuum furnace; putting the quartz tube into the furnace, vacuumizing to 4*10<-4>Pa, heating an inner container to the temperature of between 1,000 and 1,080 DEG C, controlling an outer container to be 25 DEG C, keeping cooling, and discharging impurities; 5, taking the quartz tube out of the vacuum furnace after cooling, adding pills from the second end, and inserting a second electrode assembly into the ball bulb, wherein the second electrode assembly is coaxial with the first electrode tip; 6, connecting the second end and an extraction and filling table, vacuumizing the ball bulb to 4*10<-4>Pa, filling inert gas, and sealing the second end; 7, making the second end of the quartz tube upward, inserting the quartz tube into liquid nitrogen, liquefying the inert gas to the ball bulb, and inserting the quartz tube into a pressing sealer with a liquid nitrogen tank; and 8, making the quartz tube form a conductive connector, and pressing and sealing the quartz tube on an outer cover, wherein the two electrode assemblies are electrically connected with a conductive assembly respectively.