Based on connecting and organizing the microscopic indexes of heart Yang deficiency syndrome characteris-tics, mechanism of the disease course, hemodynamics, cardiac functional grading, cardiac stress markers, neuroendocrine hormones, inflammatory reactants and so on, this paper is to study its diagnostic value and provide the basis for auxiliary diagnosis for heart Yang deficiency syndrome of chronic heart failure, and reflect on the status of microcosmic syndrome differentiation which is used in...