LED as a new generation of energy-saving, environmental protection, long-life lighting source has become a consensus of all mankind. With the LED light source of substantial price reductions, and highly integrated LED driver power supply special chip with its production of power costs have gradually declined, the retail price of cheap LED bulb is close to the retail price of the fluorescent energy-saving lamps of the same power, LED as a fourth-generation light sources replace incandescent, fluorescent pace is being accelerated, affordable LED lighting into the tens of thousands of homes of ordinary people is becoming a reality, and if the government can be supported by financial subsidies, will people earlier benefited from earlier enjoy, to make society more energy-efficient.