This study approaches the, powerless source and emotional reaction in single elderly hospitalized men with heart disease. Qualitative method was adopted. Interview quidelines were used so that clients were willing to express their powerless source in hospitalization. We find the powerlessness in the following situations: no control of the body’s symptoms; no control of setting adequate social support no control to match medical policies with their needs in eating、living、and walking; no control of self-care resulting from disease; no control of getting appopriate medical resources; no control of decision in medical system. Negative reactions to powerlessness are emotional unstability, fear, anger, anxiety and depression.