Frost test box

The invention discloses a frost test box, which belongs to the technical field of meteorological experiment devices, and comprises an upper box body, a lower box body, a refrigeration system and a control device, and the upper box body is provided with an upper box door. The lower box body is composed of side walls and a top wall, namely, an opening is formed in the bottom of the lower box body, a lower box door is arranged on the lower box body, the upper box body is installed on the top of the lower box body, and the upper box body and the lower box body are integrally machined and formed; the refrigerating system is provided with a plurality of temperature sensors, is mounted in the upper box body and the lower box body and is used for refrigerating the lower box body; the control equipment is electrically connected with the refrigerating system and the temperature sensor; temperature signals in the lower box body are collected through the temperature sensor, the control equipment receives and analyzes the