Abstract: The present discloses a toy duck comprising a main body shaped as a duck; a nozzle disposed on the main body for spraying water in case the main body is pressed externally; a hole at the bottom of the main body for receiving a piston assembly; and a piston assembly disposed in the hole for sealing the main body so as to prevent water from leaking from the main body, and allowing complete drainage of water in the toy duck when the toy duck is disposed on a horizontal panel to keep the duck toy clean and hygienic. The internal cavity of the main body will not contain water any more due to the piston assembly, and can be kept clean and hygienic, which is not suitable for generation and growth of bacteria therein. The new toy duck will not cause harm to health of the children.