Warm Disease Theory (Wen Bing Xue) is the standard text used by all institutes of Chinese medicine throughout China. Since its publication in 1979, it has been a compulsory text in all training institutions from which graduate students become registered doctors of Traditional Chinese Medicine. Western readers who are approaching warm disease study for the first time will appreciate that the Wen Bing Xue is the first text to undertake a comprehensive discussion of the foundations of warm disease theory and the clinical treatment of warm diseases; furthermore, it is the first to integrate the views of all schools of warm disease, including those of the great Ming and Qing dynasty doctors Wu You Ke, Ye Tian Shi, Sheng Bai, Wu Ju Tong, and Wang Meng Ying. The work is arranged in two sections. The first introduces all the basic information concerning warm disease, including its history, disease causes, pattern identification, and general diagnostic and treatment methods. The second section presents disease concepts, etiologies, pathologies, main points of diagnosis, pulses, patterns, and treatments for each of the different warm diseases of the four seasons.