In TCM theory, pathogenesis of HF is related to deficiency of heart yang and heart qi and stasis of blood and excessive water (fluid), as well as interaction within these pathological factors. Under physiological conditions, yang can promote water metabolism, while qi can accelerate blood circulation, so yang and qi are the vital elements for human body to maintain life activity. TCM theory holds that patients suffered from HF are in deficiency of heart yang and qi for a long course, which directly leads to excessive fluid retention and blood stasis (Figure 1 ).