Ecological engineering is a construction method taking the viewpoint and principle of ecology. Nevertheless, no ecological engineering can completely simulate nature or create a natural environment. It is a deliberately man-made creation at best. Thus, it may be more correct to call the ecological engineering a near bioengineering. The application of ecological engineering is not necessarily more costly than that of conventional construction methods. What we need to do is adjust our mentality to find a more environment-friendlier construction method.