The poorness of soil is one of the major causes that make the agricultural yield of northern China backward anal natural disasters frequetly, which is produced from the given natural conditions of northern China, haring an ageold history origin, Our forefathers also damaged the ecological eniironment of the base when they made great contributions to the development of world agricutare and the civilization of mankind on the precious land，now the scenary is with serious soil loss, vertical and hor izontal gullles, broclcen farmland and poor soil.It is suggested thatthrough comprehensive harness of soil conservation we improve soil, establish farming system to use and cultivate land, and make the soil more fertile as it is farmed to ensure high and stable yield permanently,