▎ 摘　　要

NOVELTY - Degradable sucker based on sweet potato starch comprises 20-30 pts. wt. chitosan biguanide hydrochloride, 8-10 pts. wt. common sweet potato starch, 30-60 pts. wt. modified sweet potato starch, 25-35 pts. wt. modified soybean protein fiber, 10-15 pts. wt. glycerol, 12-14 pts. wt. ferulic acid, 60-80 pts. wt. degradable plastic and 8-10 pts. wt. edible pigment. USE - Used as degradable sucker based on sweet potato starch. ADVANTAGE - The degradable sucker does not pollute the environment; is in accordance with the green-pollution-free environment-friendly product, can be naturally degraded in the environment; and has mechanical property and bacteriostatic effect. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the degradable sucker based on sweet potato starch, comprising (i) preparing modified cellulose by (a) preparing antibacterial particles; (b) preparing cellulose powder; (c) preparing modified cellulose; (ii) preparing modified soybean protein fiber by (ii-a) preparing soybean protein fiber; (ii-b) modifying the soybean protein fiber; and (iii) preparing suction pipe.