Balance type dry-wet cycle device

The utility model relates to a marine environment test device and in particular relates to a balance type dry-wet cycle device. According to the technical scheme, the balance type dry-wet cycle device comprises an air drying device, sample cells, a motor, a pinion, a balance type bracket, a hose and a controller, wherein the sample cells are respectively arranged on two sides of the balance type bracket; a sample plate is arranged in the sample cell; the two sample cells are communicated through the hose; the air drying device is arranged on the top of the sample cell; the air drying device is driven through the motor and the pinion arranged at the bottom of the balance type bracket; the controller is arranged on one side of the balance type bracket. The balance type dry-wet cycle device has the beneficial effects that a structure similar to a counter balance is used, the principle of a communicating vessel is utilized, the liquid level in the communicating vessel is flush everywhere, and due to the counter balance structure, the water tank on two sides can be vertically lifted, so that the medium solution can be prevented from spilling, and the marine corrosion condition in the wave spilling area and the tidal range area can be well simulated.