To provide a method by which a concrete carling can be constructed easily on a slope without allowing concrete from flowing out of forms at the time of placing the concrete.

A concrete carling is constructed in such a way that, after a supporting member 1 is placed on a slope 7, a lower frame 2 which is constituted by attaching pipes 3 which are laid in a direction crossing a plurality of longitudinal members 21 to a connected body of the longitudinal members 21 and transversal members 22 is supported by the supporting member 1 and integrated in one body with the slope 7 by spraying concrete or mortar upon the frame 2 between the longitudinal members 21 at both ends of the frame 2. Then an upper frame 4 composed of a front plate 41 and wall plates 42 is fitted to the lower frame 2 and united in one body with the frame 2 by tightening wires 5 passed through the pipes 3 of the frame 2. Finally, the space between the upper and lower frames 4 and 2 is filled up with concrete.