A pool apparatus for users to do activities in the pool apparatus. The pool apparatus includes a pool main body, one or more than one reaction deices and a control circuit. The control circuit is connected to the reaction device and controls the reaction device according to a setting to increase additional functions of the pool apparatus. When the control circuit is connected to an external device via at least one wireless network, a user may use the external device to adjust the setting. The external device does not need to be paired with the control circuit in advance. Instead, the external device interacts with the control circuit via a protocol to access and adjust the setting.
