According to a research report on intelligent street lamps by Navigant, it is predicted that the number of street lamps will be about 93. By 2023. 8 is LED, now, this data has just exceeded 53. And 2014 ~ LED outdoor lighting will usher in a replacement tide in 2017. The popularity of LED street lamps benefits from the promotion of energy conservation, the decline in prices and the technological upgrading of LED street lamps. However, due to the continued erosion of LED prices and the decline in the replacement rate of LED products, the overall revenue of street lamp lighting will begin to decline after a period of time. Navigant predicts that street lamp revenue will drop to $2. 5 billion in 2023 from $2. 3 billion in 2014. 2014 ~ 2017 will be a period of LED outdoor lighting replacement. Since 2014, the trend of LED outdoor lighting has accelerated. More than 600 cities in the United States are planning to change LED street lamps. Among them, New York will replace 250 thousand street lamps in the city in 2017, and then replace the decorative lighting lamps in urban commercial areas with LED lamps, this will be a large-scale LED street lamp replacement plan in North America. In addition, Europe, China, and Japan have different levels of change, which is expected to be 2014 ~ In 2017, the annual compound growth rate of LED outdoor lighting exceeded 20. Other emerging market countries, such as Thailand, Russia, Latin America and Africa, will also usher in a large-scale street lamp replacement trend in 2014. Until 2015, the penetration rate of LED street lamps gradually flattened and the growth rate began to decline. The scale of LED street lamp replacement and new LED street lamps will remain at about 10 million lamps per year every year.