The utility model is suitable for the technical field of soil tests. The utility model provides an air-cooled soil frost heaving test device. The device comprises a sample cylinder, a cold air outputunit, a displacement monitoring unit for monitoring the vertical displacement of a soil sample, a temperature monitoring unit for monitoring the temperature of the soil sample, a moisture monitoring unit for monitoring the moisture content of the soil sample and a water supplementing unit for supplementing moisture to the soil sample, a top plate is arranged at the top of the sample cylinder; bottom plate arranged at bottom end, a cold air outlet of the cold air output unit penetrates through the top plate and is positioned at the top inside the sample cylinder; a measuring head of the displacement monitoring unit penetrates through the top plate to make contact with the surface of a soil sample in the sample cylinder, a probe of the temperature monitoring unit penetrates through the sidewall of the sample cylinder to be located in the soil sample, a probe of the moisture monitoring unit penetrates through the side wall of the sample cylinder to be located in the soil sample, and a water outlet of the water supplementing unit penetrates through the bottom plate to be located at the bottom end of the sample cylinder. The problem that the frost heaving test result of the soil body is inaccurate due to the fact that the test does not conform to the frost heaving generation condition of the actual environment is solved.