Abstract: Aiming at the low efficiency of manual harvesting of cabbage and the limitations of the application of modern agricultural harvesters,a portable fully closed cutting type cabbage harvester was designed. The harvester realized the roots of cabbage through the rotating and closing movement of petal-like blades. Cutting. First, the physical model of the harvest object is established based on the morphological characteristics of the cabbage sample; secondly,a fully closed cutting harvester is proposed based on the model, the head of the harvester is designed and the movement analysis is carried out, and the harvester machine is discussed. The maximum opening and closing area of the head blade is related to the number and shape of the blade. The minimum chute of the gear ring and the blade size are determined under the condition of the blade opening diameter of 200mm and the minimum transmission angle of the head mechanism. The simulation analysis of the head movement characteristics showed that the size of the harvester’s head, the number of blades and the shape were reasonable,and the closure characteristics of the head met the design requirements. Finally,the cabbage harvesting test was carried out. The results showed that the picking efficiency of the picker group and the manual group were different. It is 59. 8 pieces/min and 19. 4 pieces/min. The harvesting efficiency of cabbage using this harvester is higher than that of manual harvesting,and the harvesting efficiency is stable, and it has a good market application prospect.