A drainage experiment on chain concrete blocks with ecological function has carried out to study their mechanical properties. This paper presents the stress condition, stability and the effect of infilling gravels, and analyzes the anti-scour capability of the chain concrete block revetment, finally provides some usage suggestions. The results indicate that: The stability and anti-scour capability are good after the blocks are filled with gravels. The infilling gravels are scoured and a certain slope is formed. It is suggested to consider the residual volume of the gravels to save investments. The average thickness of the cushion is suggested to be 15cm to keep the dry stones smooth. The new type chain concrete blocks have such advantages as high anti-shear stress and stability, well permeability, ecological protection, easy construction and low cost.