Application of saponin endosperm extract in preparation of medicine for treating ulcerative colitis

The invention provides application of a Chinese honeylocust fruit endosperm extract in preparation of a medicine for treating ulcerative colitis, and a preparation method of the Chinese honeylocust fruit endosperm extract comprises the following steps: (1) pulverizing Chinese honeylocust fruit endosperm, sieving, slowly adding into boiling water while stirring, uniformly mixing, boiling with soft fire, and concentrating to a certain concentration to obtain Chinese honeylocust fruit endosperm liquid medicine; (2) pulverizing saponin endosperm, sieving, adding into water, and heating to obtain a product A; taking gleditsia sinensis endosperm, powdering, sieving, adding the product A while stirring, boiling with soft fire after the mixture is uniformly mixed, and concentrating to a certain concentration to obtain gleditsia sinensis endosperm liquid medicine. The prepared gleditsia sinensis endosperm extract has the effects of moistening dryness, relaxing bowels, dispelling wind, diminishing swelling, invigoratin