The invention discloses an automatic water-bath circulating constant-temperature swinging machine, belonging to the technical field of water-bath heating equipment. The automatic water-bath circulating constant-temperature swinging machine comprises a water-bath groove, a control box, a swinging device, a clamping device and a water-bath circulating device, wherein the control box and the water-bath groove are in fixed connection side by side; the swinging device is fixedly arranged above the control box; and the clamping device is arranged above the water-bath groove. The automatic water-bathcirculating constant-temperature swinging machine provided by the invention has the following advantages: through arrangement of the swinging device, constant measurement conditions can be realized,and the risk that an operator is easily burned due to splashing steam and hot water when the temperature of a water bath is high is avoided; and through arrangement of the water-bath circulating device, uniform temperature of all measurement points in the interior of the water-bath groove is achieved, and automatic opening and stopping of a circulating pump motor are realized.