To determine the effect of different factors on the opening time of pavement cooling coat, various raw materials were selected to prepare 4 kinds of new pavement cooling coats. The cooling performance of pavement cooling coat was evaluated by field test. The impacts of film forming composition, application amount and cooling functional materials content on drying time of cooling coat were studied thoroughly. Environmental factors, such as wind speed, solar radiation intensity and relative humidity were simulated to study the impact of environmental factors on drying time of pavement cooling coat and the construction control points were put forward. The results show that the drying time of the coat with 40% curing agent fulfills the relevant standard requirements. With the increasing amount of pavement cooling coat, the surface drying time decreases and complete drying time increases. The content increase of functional material shortens the drying time. Under different relative humidity, the surface drying time of pavement cooling coat is extended, but the complete drying time is reduced. The enhancement of light intensity can shorten the drying time significantly, but defects appear on the surface of pavement cooling coat after drying. Under different wind speeds, the drying time of pavement cooling coat is significantly shortened.