In this paper, the characters of adsorbability of Ca group and Na group bentonite to methylene blue were researched in order to apply bentonite as digestive mucosal protective agent.

• 为将膨润土作为消化道粘膜保护剂提供依据,本文研究了钠质、钙质膨润土对亚甲基蓝的吸附性能。