A moon chair includes a seat rod, a front foot rod and a rear foot rod, a first supporting rod, a second supporting rod and a fixing member. The first supporting rod is articulated to the seat rod and the fixing member; the second supporting rod is articulated to the front foot rod and the fixing member; the fixing member is installed on the rear foot rod; and the fixing member has a first working state and a second working state. When the fixing member is in the first working state, the moon chair is in an unfolded state. When the fixing member is in the second working state, the moon chair is in a folded state. The moon chair can be unfolded or folded by switching the fixing member between the first working state and the second working state, which is very convenient.