The present invention is related to a method of treating and preventing peptic ulcer and duodenal ulcer by administering hyaluronic acid composition with a binary mixture of hyaluronic acids having mainly different weight-average molecular weight and then different rheological, scaffold and degradation properties in aqueous solution. The resulted compositions have demonstrated an optimal balance between adhesion, tissue scaffold and treating time to the peptic and duodenal ulcer and bleeding. Thus, the present inventive binary mixture exhibits a quick and lasting effect on the treatment and prevention of duodenal or peptic ulcer and bleeding.
