The invention discloses a smart wristband for natatoriums and a management system and method thereof. The smart wristband for natatoriums comprises a smart chip and a wristband. The wristband comprises a wristband body and an elastic wristband tape with both ends connected with the wristband body. The wristband body is equipped with a receiving chamber for receiving the smart chip. A positioning structure is disposed in the receiving chamber and is used for positioning the smart chip. The smart chip and the wristband body are designed in split structure. The smart chips are automatically allocated and the wristband body is fetched by users. Thus, management is facilitated and self-service ticket purchase and smart chip allocation can be achieved.