Abstract: Peasants income increase is the core of the “three agricultural problems” The structure of peasants income changes with the increase of peasants income， and the structural changes of peasants income can reflect the quantitative change of peasants income The paper analyzed the process of the structural changes in the peasants income from different sources of income， and revealed the relationship between the structural changes of peasants income and peasants income increase by structure change analysis and contribution analysis.

Key words: underdeveloped areas, peasants, income structure