The present invention provides a method for treating gastric ulcer and/or stomach cancer in a subject, which comprises administering to said subject an effective amount of an alcohol extract of dehulled adlay seeds. Preferably, an ethyl acetate sub-fraction of the alcohol extract of dehulled adlay seeds has a better effect in treating gastric ulcer and/or stomach cancer.本發明係提供一種於一個體中治療胃潰瘍及/或胃癌之方法,其包含施予該個體有效量之去殼薏苡子之醇萃取物。較佳地,去殼薏苡子之醇萃取物之乙酸乙酯分液具有較佳之治療胃潰瘍及/或胃癌之效果。(無元件符號說明)