Lighting serves human's development and requirements.Healthy lighting not only meets urgent needs that the society develops ahead and healthily,but emphasizes human's effects on physiology and psychology by lighting,thus making lighting healthy.Besides,like green lighting,healthy lighting also stresses energy saving and environmental protection,and emphasizes that lighting should satisfy human's amfort able demands on physiology and psychology.So,healthy lighting is the necessity of the development of green lighting and comfortable lighting,but it more stresses the health function.In a word,healthy lighting is a lighing favourable to healthy development of human,environmnet and society,and it is a 21st century lighting according with the sustainable development strategy.