Abstract: In order to explore the distribution law of static spatial pressure in warehouse, the horizontal surface of the storage material in the warehouse was divided, and then it was cut along the depth direction of the grain pile to obtain several trapezoidal section of the grain column.The isolation body calculation model of the spatial pressure field of the warehouse storage material was obtained.The static equilibrium analysis was carried out by cutting the micro-element of unit height on the isolated body calculation model, and the static equilibrium equation was established.Based on the distribution law of effective friction coefficient of grain pile, a calculation method of static spatial pressure field of warehouse storage materials was proposed.The vertical pressure and the horizontal pressure at any point of the bulk material of warehouse can be calculated by this calculation method.The results obtained in this study are compared with the results of the real warehouse test, the warehouse specification and numerical simulation results of the FLAC^3D.The results show that the vertical pressure and horizontal pressure obtained by this method increase with the increase of the storage depth, which is basically consistent with the warehouse specification.The vertical pressure on the same horizontal plane gradually decreases from the center of the storage to the confined warehouse wall, which is consistent with the distribution law of the real warehouse test results and FLAC^3D numerical simulation results.This study can provide a theoretical support for solving the problems of overpressure and arch of grain storage in bulk storage space pressure field of warehouse and the safety of structure design of grain storage.