Abstract: Based on the fieldwork, this paper deals with the structure of exogenic force in the north terrain of 1oess hi11y gulied p1ateau in north Shaanxi Province. The author thinks that the structure research is a key to recognize the feature of the local landform and its development. The composition and distribution of the structure have been analysed. The 4 types of the districts of the compositional model of the structure of the exogenic force are given as following:
1. Water-Wind-Gravity-Human process,
2. Water-Gravity-Wind-Humau process,
3. Water-Gravity-Human-Wind process,
4. The process of the balanced exogenic forces.
Finally, as an emphasis, the wind erosion is discussed. The author emphazes that more attention should be paid to prevent the wind erosion.