The vibro replacement stone column technique was successfully applied to the foundation reinforcement in No.3 camp of Jinping Project. After using the technique, the bearing capacity of the foundation was improved, the foundation liquation was eliminated obviously, and the settlement quantity and un uniformity settlement value were reduced. By an illustration, the purpose, the design and construction scheme, the construction technique, the quality control and quality detection of vibro replacement stone column were all introduced briefly. It was proved by practice that vibro replacement stone column technique is characterized by good efficiency, convenient construction and reliable quality.