The cucumber, pepper and eggplant plug seedlings were used as experimental objects. The adhesion characteristics of potting seedling bowl and hole hole were tested by the pull-out test of seedling seedlings. The compression behavior of pot was studied by plate compression method. Tensile and leaf damage test. The experiment shows that during the automatic transplanting of plug seedlings, the gripping force of the clamp clamping bowl body is mainly used to overcome the adhesion of the plug tray body and the hole of the plug cavity. Under the same seedling raising conditions, the cucumber , Pepper, eggplants plugging capacity of the order of pepper> cucumber> eggplant; different plug seedlings bowl pressure capacity is similar; compared with pepper, eggplant plug seedlings, cucumber seedlings easier to pull off, 3 Seedlings of seedlings break the breaking strength similar. When designing seedling harvesting facilities, grippers and seedlings, consideration should be given to avoiding the need for seedlings to provide more room for seedlings.