This paper is established in the characteristics of infrared thermal imaging of impotence patients with "Du Meridian cold and stagnation", through the interpretation of the function of the Du Meridian, and the relationship between the Du Meridian and impotence, discusses the importance of the Du Meridian in warming and raising Zongjin, promoting sexual desire and maintaining erectile dysfunction, proposed that the core etiology and pathogenesis of impotence is the deficiency of the Du Meridian 'Yang, coagulation of the Du Meridian' Cold, and the blockage of the meridian as the result. Formulated the treatment rules and prescriptions of "warm Yang and expedite Du Meridian", initially formed the academic view of "Du Meridian controls Zongjin", which was complete in theory, prescription and medicine, and provided a new idea for the treatment of impotence.