This article expound the relationship between the Buddhist Tzu-Chi Association and the Thinking of the Lotus Sutra. Master Cheng-Yen, the founder of the Buddhist Tzu-Chi Association, has always emphasized the practical dimension of the Lotus Sutra. This article expound the parallel between the words of master Cheng-Yen and the text of the Louts Sutra, in order to illuminate the Buddhist philosophical foundation of the Buddhist Tzu-Chi Association.