Cold chain refrigerator with high functionality

The cold chain refrigerator comprises a heat insulation box body, a refrigeration box is fixed to the top of the heat insulation box body, a flow dividing box is fixed to the bottom end of the interior of the heat insulation box body, and humidification equipment and dehumidification equipment are arranged at the positions, located on the two sides of the flow dividing box, of the bottom end of the interior of the heat insulation box body correspondingly; and the center air supply box is arranged in the heat insulation box body, and the bottom of the center air supply box is fixed to the middle of the upper end of the flow dividing box. According to the cold chain refrigerator with the high functionality, through the structural matching design of the flow dividing box, the center air supply box and the end backflow box, air in the heat insulation box body can be internally circulated, through the structural design of a first barrier plate and a second barrier plate, an internal circulation path can be adjuste