Abstract: Black soilsare the most fertile ones in China,but they are suffering from deterioration, which includes water loss and soil erosion. The landform of black soils is undulated peneplain so that the soil is easy to be eroded. In this paper, the authors propose three antierosion measures: 1)Slope erosion prevention includes two parts, the first part is changing the aspect of the ridges of the land from slanting or parallel to vertical to horizontal direction, if the slope is less than 4 degrees; the second part is that if the slope is bigger than 4 degrees, the terrace should be made to avoid erosion. 2)Gully control includes building gully head embankment or dyke or even small reservoir, planting trees and grasses in the middle part; ducks, gooses, fishes and frogs could be raised in the pools or reservoirs to increase the economic efficiency. 3)Planting trees to make forest prevent wind and erosion. The authors also suggest that the management should be improved, the present situation is that there are laws in China protecting the crop land, but the laws can only protect the crop land quantatively.To guarantee the quality of the crop land, thorough study should be made, and the monitoring organization should be established.