The invention relates to a movable type differential pressure precooling device. The movable type differential pressure precooling device comprises a controller and a square box body, wherein self-locking mobile wheels are arranged at the bottom of the box body; a goods feed inlet and a goods discharge outlet are formed in the side walls of the box body; square refrigeration units are arranged in the center of the inside of the box body; a square transfer channel encircling the refrigeration units for a circle is arranged between the side walls of the refrigeration units and the side walls of the box body; transfer direction conversion units are arranged at the four corners of the transfer channel correspondingly; cold wind outlets distributed vertically are formed in the four side walls of each refrigeration unit correspondingly; and a cooling capacity adjust and control cover plate is arranged outside each cold wind outlet. The movable type differential pressure precooling device has the beneficial effects of improving precooling efficiency and precooling quality, facilitating the achievement of unattended and refined management, prolonging the preservation time of fresh fruits and vegetables, mushrooms and other agricultural products, improving product quality and quality safety, reducing labor cost, and having good economical benefits and promotion value.