The lighting project of Hedayat hospital is considerable from many different angels. Because of the location of the hospital in a residential area and a quiet street, the lighting design plan has the high level of importance and sensitivity. So we consider the lowest level of intensity and shining in the project. With regards to the different levels of parts of the building, we concentrated on linear lights. Due to the control of dazzle, all the lights are executed covertly. The main concept is the definition of building by three light color temperatures. The entrance of the building with high light color temperature turns on for understanding of the project and the high levels of parts by linear lights. Additionally, we use the capacity of lobby brightness which has a lot of glass surfaces for this idea. This space and emergency exit stairway space which are seen in two vertical zones , are turned on with low light color temperature. In the modeling of Dialox of building materials which are in two color spectrums, light and dark gray is noticed to achieve the desired lighting and brightness of the design. The brightness was considered in the E3 environment which has the maximum luminance, 10 candela per square meter at night.