The northwestern plain of Shandong is a main part of the plain of the Huang-Huai-Hai rivers and it is also an important area of grain and cotton production. However, because of the influence of drought, flooding, soil salinization and alkalization, crop yield in the area is still low and unstable. These calamities with closely internal interrelations should be considered integratedly in order to harness and control them in a reasonable way. The main measures for harness and control the calamities should be conducive to (a) the improvement of the water and salt regimes in the area on the basis of drainage, (b) reasonable exploitation and regulation of water resource on the basis of well irrigation, (c) reasonable land use integrated with maintenance and promotion of soil fertility and enhancement of rcsistance to the disasters, and (e) popularization of forestation and improvement of the ecological environment.