Starch/poloxamer composite styptic powder and preparation method thereof

The invention belongs to the technical field of medicine, and particularly relates to a starch/poloxamer composite styptic powder and a preparation method thereof. Crosslinking, alkalification and etherification are carried out on the raw material pure natural plant starch to prepare carboxymethyl modified starch, and the carboxymethyl modified starch is compounded with poloxamer to obtain the starch/poloxamer composite styptic powder. The preparation method comprises the following steps: (1) carrying out crosslinking reaction on natural plant starch and a crosslinking agent in a sodium hydroxide solution with the pH value of 9-14; (2) sequentially carrying out reaction on the starch treated by the step (1) with sodium hydroxide and sodium monochloroacetate; and (3) stirring the starch treated by the step (2) and poloxamer in an ethanol water solution, and drying. The styptic powder can keep better cohesiveness after absorbing blood so as to enhance the styptic effect, and can be degraded and absorbed by the