Background and purpose: Maek Kyoung(脈經) is a book written, compiled, and edited by Wang Hui circa 3 A.D. This book is the first technical book devoted to the diagnostics. These are very important data but never make a special study and translate. so I hope this treatise can be great help to understand diagnosis study. Methods: Maek Kyoung(脈經) consists of ten volumes, and the third volume consists of the five chapters, including inter-generation and inter-restriction of the five viscera and the six entrails and prognosis of diseases. This treatise is made up of principal, notes, study and conclusion, we tried to make a translation faithful to the original. Results and Conclusion: Chapter 3 refers to five things. The first is relation between spleen and stomach, the second is how to diagnose diseases by using intergneration and inter-restriction of five elements, the third is roles of spleen that has an influence on four viscera through four seasons, the forth is the fact that quantity of gastroqi decides prognosis of diseases, and the fifth is that climate change has influence on the seriousness of diseases. Chapter 4 refers to four things. The first is relation between lung and large intestines, the second is ordinary and extraordinary pulse condition of lung, the third is that pulse condition including its speed, and the forth is how to diagnose diseases by using intergneration and inter-restriction of five elements and climate change.