The Fahua Jing(Saddharmapuṇḍārīka Sūtra) is one of the most important sutras of Mahayana Buddhism, and since its translation into China, it has been unceasing annotated by eminent monks of many dynasties, especially the actual founder of the Tiantai School ─ Zhi-yi (538-597), whose commentaries were deeply affected. Zhi-yi annotated two special books of The Fahua Jing ─ The Fahua Xuanyi(The Profund Meaning of the Fahua Sutra) and The Fahua Wengou(Textual Commentary on the Fahua Sutra), together with The Moho Chihkuan (Great Śamatha-vipasyanā ), are known as three major volumes of the Tiantai School, which are very important basis of the texts of the Tiantai School. Zhi-yi collected the essence of Buddhism by means of the interpretation of "Fivefold mysterious meanings" in The Fahua Xuanyi. Especially in the naming of the "Fivefold mysterious meanings", the five words of "Miao Fa Lian Hua Jing" were used as the main compendium of the whole Buddhism. Being the same dynasty as Zhi-yi of the Three-Treatise School─Ji-zang(549-623), who also annotated a number of special books to The Fahua Jing, including The Fahua Jing Xuanlan(The Profund Meaning of the Fahua Jing), The Fahua Jing Youyi(The Roaming Meaning of of the Fahua Jing), The Fahua Yishu(The Annotation on the Meaning of the Fahua Jing), The Fahua Lunshu(The Commentary of the Fahua Jing) and The Fahua Tongliak(The Summary and Brief of the Fahua Jing) total five books, which were above and beyond the writings of Zhi-yi . Although Zhi-yi and Ji-zang were living in the same dynasty, but they came from different background of the succession of the masters. Zhi-yi succeeded from Huisi Zen master and learned Fahua samādhi, more over, he inherited the thought of "One-mindedness of the threefold contemplation", "Harmony of the Threefold truths". Ji-zang interpreted The Fahua Jing on the basis of so-called "Old saying Guan River " and "The succession of (dharma-lineage of) She Mountain" of the prajñā and madhyamakā theories. Because of the their background of the succession of the masters, the theories based and the methods used were differnt, therefore, the interpretations of the Zhi-yi and Ji-zang on The Fahua Jing also displayed their own personal style and characteristic, which is the direction of this paper to study.