Countries actively promote the implementation of energy saving and emission reduction projects, especially in China, LED street lamp manufacturers have attached great importance to LED street lamp because of its huge business opportunities. Street lamp is an important part of urban lighting. The traditional street lamp often uses high-pressure sodium lamp. The low light efficiency of high-pressure sodium lamp on the whole causes a huge waste of energy. Therefore, the development of new high-efficiency, energy-saving, long life, high color rendering index and environmental protection street lamp is of great significance for energy saving of urban lighting.