The invention relates to a concrete split test device being capable of controlling wind speed and humiture and a concrete split climate sensitivity evaluation method; the device is formed by a sealing annular air channel which is provided with a fan and is divided into an experimental section and a temperature and humidity adjusting section; the experimental section of the air channel is provided with a wind speed sensor, a temperature sensor and a humidity sensor; the wind speed sensor, the temperature sensor and the humidity sensor are respectively connected with a central controller; the output of the central controller is respectively connected with a frequency changer in a power circuit of the fan, a temperature control mechanism and a drying mechanism in the temperature and humidity adjusting section of the air channel; the experimental section of the air channel is provided with a split test support; and simultaneously the experimental section of the air channel is made from the transparent material. The concrete split test device can preferably choose the concrete mix proportion with low split climate sensitivity to be used in the complex weather condition project; the split climate sensibility factor of the concrete can be obtained by comparing the split condition of the concrete in different wind speed humiture conditions; and the concrete with small climate sensibility factor has more stable anti-cracking performance in different climate conditions.