The invention discloses a refrigerator car adopting pressure-difference precooling. The refrigerator car comprises a refrigerator car body (100) capable of freely moving. The refrigerator car body (100) is provided with a hollow pressure-difference precooling box (11) which is provided with a refrigerating system, and the refrigerating system communicates with the pressure-difference precooling box (11) and used for cooling external air and then conveying the air to the pressure-difference precooling box (11). The refrigerator car adopting pressure-difference precooling can guarantee the effect that picked fruits and vegetables are conveniently and quickly cooled at a fruit and vegetable producing area, the refrigerator car can move conveniently and quickly, pressure-difference precooling convenience is achieved, and fruit and vegetable fresh-keeping cost can be lowered; and wide application and popularization are facilitated, and great production practice significance is achieved.