1. First of all, we should understand that young Zanthoxylum bungeanum trees and fruit trees at the initial stage of fruiting need pruning, but their pruning scales are different. Young trees and fruit trees can be pruned after the pepper harvest in autumn, while sick trees and old trees need to be pruned before the spring. Winter is the worst time to prune pepper, because at this time, the branches of plants are vulnerable to freezing damage and dry up, while pruning fruit trees in spring will cause wounds to heal and reduce production.

2. The general principle of pepper pruning is "combination of thinning and shrinkage, mainly short cutting, weakening retention strength and thinning strong buds". Generally, pepper begins to bear fruit in the third year and forms a fixed output in the sixth year. In the early pruning of pepper, the pruning of the main branches of fruit trees is generally based on natural and happy structure, while the auxiliary branches should be cut gently and slowly, and the fruiting branches should be staggered and arranged alternately to increase the fruiting amount as much as possible.

3. Zanthoxylum bungeanum began to enter the full fruit period after six or seven years of planting, and the highest yield period was around the tenth year, and the full fruit period was about ten to twenty years. The main purpose of pruning in this period is to maintain the vigorous and stable growth of Zanthoxylum bungeanum. When pruning, the combination of pruning and retraction, thinning and retention, thinning and retention can ensure the stable production of pepper.