In order to research the feasibility of the application of transverse ventilation in 27 meters wide paddy warehouse， the fluid characteristic parameters were measured by a set of transverse ventilation system installed in the paddy warehouse and some static pressure tubes in the paddy heap. The calculating formula of unit profile resistance and facilities resistance was acquired. The result indicated that transverse ventilation was ofgood uniformity， in the applicable range of unit ventilation quantity the total systemic resistance was within 1 400 Pa， which indicated that the scheme of transverse ventilation was feasible to 27 meters wide paddy warehouse， which laid a foundation for improving the design and application of transverse ventilation system technology.