Abstract: The paper studied the design and construction for the architecture of grass network slope protection and its application in Changting.This technology is a new architecture used in avalanche defense against hill collapse and for soil and water conservation.The paper has described the architecture of the avalanche defense from its upper, middle and lower layers, respectively, on their structural characteristics and the functional theories in soil and water conservation.Calculation methods have been proposed from recently used in architectural design for the grass network slope protection, including external loads, normative standards and the network rope of slope protection. The calculation model was given with the pullout force of pile against the external load of system to balance internal force of the system, thus the avalanche defense was closely compacted with the hill forming as a monolithic architecture.The grass network slope protection systems have been introduced based on gradients, including the content of design, construction methods and the techniques for trouble shooting during construction.Comparing with traditional slop protection, three significant advantages have been obviously indicated including the low in cost, optimum in applicability and conservation in ecology.