The utility model provides a riding type water amusement boat, comprising a boat body; the utility model is characterized in that the boat body is provided with an air chamber and a ballast chamber from up to down; the side face of the boat body is provided with a cover plate of ballast chamber on the position corresponding to the ballast chamber. The utility model has the advantages of simple structure and low cost; moreover, the utility model can carry people, and the people in the boat can also directly contact the water and play with the water, thereby increasing interests of the water amusement of people.