Professor FENG Ling often treats chronic heart failure from the perspective of "Sanjiao" , and the clinical effect is remarkable. Master FENG believes that although the location of heart failure lies in the heart, it is always Sanjiao. This Sanjiao refers to the solitary organ and the shape of Sanjiao. Sanjiao is the path through which the body's vital energy and water can pass. It is not allowed to circulate in the whole body to perform Qi movement, and cause the body to stop storing water and cause heart failure. Master FENG believes that the pathogenesis of heart failure is the unfavorable Qi movement of Sanjiao. The treatment method is mainly to invigorate the Qi movement of Sanjiao. If it is effective, the medicine of Qi phase of Sanjiao was used to promote Qi and water, and relieve the function of Sanjiao. According to Sanjiao viscera, it nourishes it and helps the Qi movement of Sanjiao. The clinical medication adopts the self-made Lishui Qiangxin Recipe (利水强心方) , which is based on clinical changes. The article is also attached to a case of Master FENG's treatment of chronic heart failure based on "Sanjiao" theory to explain the application of the "Sanjiao" theory in the treatment of chronic heart failure.