TRNSYS is a complete and extensible simulation environment for the transient simulation of systems. It is used by engineers and researchers around the world to validate new energy concepts, from simple solar systems to complicatedsimulation of buildings. One of the solar system, solar thermal cooling systems are still in their infancy regarding practical applications, although the technology is sufficiently developed for a number of years. In particular, several researches have been carried out on the absorption and dehumidification cooling system. In this paper, in order to simulate solar absorption cooling system using TRNSYS, we show the component selections, compositions and configuration process.