The utility model provides a roof structure of sunshade belongs to recreation products technical field. The sunny side that hides that it had solved the roof of current sunshade amasss the problem that the size can not be adjusted. This roof structure of sunshade, including covering or awning on a car, boat, etc. Frame with connect covering or awning on a car, boat, etc. Board no. 1, covering or awning on a car, boat, etc. Board no. 2 and the covering or awning on a car, boat, etc. Board no. 3 on the covering or awning on a car, boat, etc. Frame, it is domatic that covering or awning on a car, boat, etc. Board no. 1, covering or awning on a car, boat, etc. Board no. 2 and covering or awning on a car, boat, etc. Board no. 3 can form the step form that descends in proper order, covering or awning on a car, boat, etc. Board no. 2 and three equal sliding connection of covering or awning on a car, boat, etc. Board on the covering or awning on a car, boat, etc. Frame, and covering or awning on a car, boat, etc. Board no. 2 and covering or awning on a car, boat, etc. Board no. 3 after the slip in proper order the superpose in the below of covering or awning on a car, boat, etc. Board no. 1, a covering or awning on a car, boat, etc. Board sliding connection on the covering or awning on a car, boat, etc. Frame, and covering or awning on a car, boat, etc. Board no. 1 can the superpose after the slip in the top of covering or awning on a car, boat, etc. Board no. 2. Compare in current sunshade, this sunshade has more roofs position of opening and shutting to realize the shaded effects of different areas size.