In view of the current alternate pattern of citrus bearing fruit,it is necessary to carry out the whole process of citrus fruit trees.A space-adjustable citrus trimmer with bilateral and neat trim is designed to meet the needs of standardized orchard pruning.The results of the torque sensor bench test showed that the sawing energy consumption and trimming effect were best when the sawing speed was 3 000 r/min and the feed speed was 0.6 m/s.The citrus trimmer had a trim width ranging from 1.6 to 2.4 m and a trim height adjustment range of 2.0 to 2.5 m.The trimmer performed the cutting operation under different trim shapes.The maximum cutting rate of the trimmer was 10.1%,the minimum cutting rate was 3.5%,the qualified rate of trimming was more than 88%.The trimming tree and section met the agronomic requirements,indicating that the designed trimer has a good practicality and it will provide a novel method for studying the citrus pruning mechanization.