Today, gradually the demands of oceanic constructure have been increasing. The underlying cause of this phenomenon is related to the hydrophilic property which the viviparous instinct of human. The increase of income, the business of tourist development, the change and increase of leisure consciousness and the deterioration of city environment cause multiple influence for increasing the demand of ocean architecture. Also, by increasing the demand of oceanic architecture, the engineering design for environmental properties of nearby areas is demanded. In this study, it analyzes the reflected solar radiation which influences the load among many factor considered for the sea which has a special environment. Buildings located on the land and the waterfront have constructed a system that is avoiding solar radiation in summer and getting solar radiation in winter. Solar shading is about solar radiation from the sky in summer. It have not been that solar radiation from bottom prepare shading. The same is true of reflected solar radiation from the ocean. Normally, reflected solar radiation from the inland is a little compared with global solar radiation. In other way, reflected solar radiation from the ocean is much compared with solar radiation from the inland. So it judged that this tendency will not ignore. If it is correct, will establish a index about cooling load. Also, in this study, by extracting global solar radiation incident upon a vertical surface to reflected solar radiation incident upon a vertical surface among the upward solar radiation, the sun’s altitude and the solar azimuth were analyzed. Also, the effect of cooling load was checked by using simulation.