Constant-temperature water bath device

The utility model discloses a constant-temperature water bath device, which comprises a box body, a control panel and a box cover, one side of the box body is hinged with the box cover, the other side of the box cover is fixedly connected with the box body through a buckle, heating strips are arranged on two sides of the inner wall of the box body, the heating strips are sleeved with a water bath device, and the water bath device is arranged in the box body. The water bath device is movably connected with the heating strip, and a heat preservation layer is fixedly arranged on the inner wall of the box body; the control panel is used for controlling the servo motor to rotate forwards, the servo motor drives the first gear to rotate, so that the rack can drive the water bath device to move upwards, a test tube can be clamped and fixed through the clamping mechanism, an operator is prevented from being scalded when the test tube is placed in the machine body and the temperature in the water bath device is relati