Professor LU believed that the occurrence of coronary heart disease was mostly caused by qi and the treatment mainly focused on qi. Qi is the essence of human beings, comprising human body and maintaining the essence of human life, with the function of promoting, defending and consolidation. Pain is divided into deficiency and excess. Excess pain is caused by unsmoothness while deficiency pain is caused by disnourishment. Professor LU focused mainly on tonifying qi in syndrome differentiation and treatment of coronary heart disease, using Yixin Decoction addition and subtraction, which consists of six herbs, such as Renshen (Ginseng Radix Et Rhizoma) , Maidong (Liriopes Radix) , Wuweizi (Schisandrae Chinensis Fructus) , Danggui (Angelicae Sinensis Radix) , Zhimu (Anemarrhenae Rhizoma) and Shichangpu (Acori Tatarinowii Rhizoma) .The six herbs have effects of benefiting qi, nourishing yin, nourishing heart and tranquilizing mind. Professor LU believed that attention should be paid on the health cultivation, proper diet, and regular living habits in the treatment of coronary heart disease. Chest Bi caused by qi deficiency and blood stasis should be treated by replenishing qi, promoting blood circulation, resolving blood stasis, dissipating lumps, alleviating pain, nourishing heart and tranquilizing mind. Yixin Decoction addition and subtraction was used, one medical case recorded to illustrate the good effects.