The purpose of this study was to investigate effects of sympathy on psychological capital and happiness. In knowledge and information society, the power to sympathy is one of the most important natural traits and competency of contemporary people. As a suggestion, the sympathetic communication model consists of sympathetic capability, sympathetic module, and sympathetic talking. When these components form trinity, the effects of sympathy will be the highest and power to sympathy will makes people happier. Data were collected 473 people from 10 to 50 residents in Daejeon/Sejong/Chungnam province with the questionnaire including sympathetic capability, psychological capital, and happiness. Reliability and validity of scales were analyzed and were tested differences of psychological capital and happiness according to sympathetic capability using SPSS The results of this study are as follows: First, there were good in reliability and validity of scales used. Second, those who have high sympathetic capability are at a higher level of psychological capital than those who have low sympathetic capability. Third, those who have high sympathetic capability happier than those who have low sympathetic capability. Finally, the limitations and future directions of the study were discussed.