The biggest role of the hospital is to promote the recovery of the patient, and the alternating day and night light beam has been shown to promote the recovery and regeneration of the patient. In other words, in hospitals, doctors’ operating rooms and nursing homes, lighting solutions must fully take into account the human circadian rhythm. The corresponding light color can improve the quality of human sleep and greatly shorten the time required for recovery. It needs to be mentioned that lighting in the healthcare sector has to meet the specifications of many standard lights: for example, the brightness and glare control values for treatment rooms. The laid-back environment and soft, harmonious lighting conditions in the interior make an important contribution to the relaxation and safety of the patients, and provide the greatest assistance for the doctor’s operation and the environment for treating the patients.