The invention provides antibacterial hydrogel suitable for
diabetic foot ulcer and a preparation method of the antibacterial hydrogel, and belongs to the technical field of preparation of medical hydrogel. The preparation method comprises the following steps: (1) adding
acrylic acid, a cross-linking agent and an initiator solution into a
sodium alginate solution, and carrying out
sodium alginate modification; (2) adding a medicinal
active component D and an antibacterial component E, and adding a CaCl2 solution to prepare a crude gel product; and (3) washing the coarse gel, and sucking the washed coarse gel with
filter paper to obtain the antibacterial hydrogel. According to the prepared hydrogel, by improving
sodium alginate, the
wound exudate absorption speed can be greatly increased, the wound is treated in time,
traditional Chinese medicine ingredients are added, the hydrogel permeates into the wound through slow release to be absorbed by a
human body, the local medication effect is achieved, and the
blood supply condition of the ulcer position can be improved through addition of the conyzasaponin R, so that the healing speed of the
diabetic foot ulcer is increased through a synergistic effect.