Ever since the appearance of LED, LED industrial lighting has become the main development trend in lighting industry. High-pole lamp s were often used in industrial lighting, and now it has switched to led high bay . Since LED high bay are of low energy consumption and high luminance, it has been widely applied to replace old fashioned HID. European and American countries have been promoting LED Lights for the important mission of saving energy and cutting down emission. Manufacturers are working on improving LED high bay life span, cutting cost, modularization, and convenient installation. The benefits on those aspects have motivated enterprises to replace traditional lights with LED high bay. We can predict the future lighting industry dominated by LED, and with LED high bay standing like an evergreen.