The utility model belongs to a child toy, in particular to a toy boat. The scheme of the utility model is that the toy boat comprises a boat hull and a power device which adopts a rubber band to drive propellers. Square holes for placing the propellers are formed at the middle part of the boat hull in the vertical direction; small round holes are formed in the horizontal direction and fixture blocks are arranged on both sides of the boat hull top surface right above the small round hole; two ends of the ring-shaped rubber band pass through the small round hole and are sleeved on the fixture blocks; and the middle segment of the rubber band is tightly clamped on two radial sides of the root part of the blade of the propeller. The utility model has the advantages that the rubber band is adopted as the power source of the toy boat, so as to eliminate the need of a battery or fuel, thereby removing potential safety hazards and realizing low use cost, and meanwhile the product has simple structure, good fastness and low manufacture cost. Furthermore, the product can not be broken or dissembled when being used by an infant; and the rubber band is utilized to drive the boat to move, so as to lead the infant to know the elasticity of the rubber band and the rotation of the propellers, and is intuitive to serve the effect of teaching through lively activities.