The article introduces how to design and construct the composite vegetation zone slope cultivated farmland The designing and the construction of slope land harnessing by composite vegetation zone is described for Hengtou Mountain,Huachuang County.The experience achieved from the project shows that the method is suitable for the slope land of 3-8°,loose soil and the soil thichness less than 30 centimeters,and not suitable for the area where the level terrace soil ridge is not fit for constructing.