With the birth of blue LED and white LED, traditional lighting has gradually been replaced by energy-saving LED. LED technology has also been applied in various fields to improve human life. Climate change has made the issue of energy conservation and carbon reduction increasingly valued, and how to effectively reduce energy consumption has become an important topic. With the birth of blue LED and white LED, the traditional lighting has gradually been replaced by energy-saving LED, and LED technology has also been applied in various fields to improve human life. The efficiency of efficient white LED is 20 times higher than that of traditional incandescent lamps, while according to the statistics of the US Department of Energy, the conversion of traditional lighting to LED by 2030 can reduce 261TWh of electricity. about 30 power plants saved 1,000MW of electricity respectively, while reducing 1. . 8. 5 billion tons of carbon dioxide emissions. In addition, LED can be combined with solar energy to replace toxic and dangerous traditional coal lamps. LED technology also won the well-known Zayed Future Energy Prize for renewable Energy and sustainable development this year, affirming the positive impact of LED technology on the world. LED plant factories to ease the food crisis. The United Nations estimates that the population will reach 10 billion by 2050, when food production must increase by 50 to 60, but warming affects soil and water resources. leading to uncertainty in the external environment. Some operators move crops from outdoors to indoors, combining efficient LED and agricultural technology to build plant factories. Allocating LED light of different wavelengths for various crops can accelerate their growth speed and increase their nutritional value, thus avoiding interference from external environment. Benefiting from indoor planting technology, the Netherlands has become the second largest food exporter. Its tomato production is more than six times the average, but its water consumption is 25 times lower than the average. LED ultraviolet sterilization improves water pollution. With the growth of population, water pollution and water shortage are another major problems that must be faced. Nearly 8. 0. 5 billion of the population lacks daily basic water, and about 500 thousand people die of water pollution every year. Obtaining clean water becomes a major challenge. 2018 Zayed Future Energy Prize life achievement award winner Shuji Nakamura said in order to solve water pollution problem they is R & D wavelength for 280 nano of uvc led to kill water of pathogens. Although the current uvc led has low power and low efficiency, they believe that they will be able to develop efficient equipment and use it in developing countries. ( Text: LEDinside Annie)