Abstract: The materials studied in many years have shown that there was a worse change of ecological conditions on the cutting areas in the west subalpine belt of Sichuan province. For example, there is great difference in temperatures and the soil moisture percentage decreases. The water-holding power is weaker than before.Some shrubs and weeds invaded, etc. If no better management given to that area the condition will be worse and worse. So that we shall cut reasonably and regenerate on time in woodland. Then, the forest will be reestablished on most cutting areas and a new ecological balance will be taking place.