Remaining needle for plant and plant infusion device

The utility model discloses a plant indwelling needle and a plant infusion device, which comprise a needle tube, the needle tube comprises a puncture section, an infusion section and a connecting section which are connected in sequence, an infusion channel is arranged in the needle tube, a plurality of infusion ports are arranged on the side wall of the infusion section, the infusion ports are outlet ends of the infusion channel, and the inlet end of the infusion channel is arranged on the connecting section. The infusion opening is provided with a permeable component. Plant epidermis disinfection and plant indwelling needle head disinfection pretreatment are carried out, a hammering tool is used for directly nailing a puncture section and an infusion section into a tree trunk, the puncture section is convenient for hammering and nailing into the plant indwelling needle head, a high-water-conductivity material of the infusion section is in contact with a plant conduction tissue, infusion is carried out in a p