Korea-U.S.A. FTA is rising as a hot issue. It means to expand broad opening and free trading to all industrial fields. However, this will have negative influence in Korea. First, Korea’s agriculture will feel the pinch of FTA. U.S., which has strong competitive power in agricultural products, can sell farm produce with lower price and it will cause Korean farmers’ income decreases sharply. Second, problems of part-time job will be worsen. Although pro-FTA insists more employment will be created with FTA, it is most part-time job which are provided no-benefit. Chile and Mexico are good examples. Finally, Korea-U.S.A FTA will instigate cost rises in health and medical service field. U.S. will pull up medical supplies costs with strengthening their patent rights. Therefore, the gap between rich and poor in medical area will be worsen because of  the commercialization of medical service system. Like this, Korea-U.S.A FTA may bring happiness to only a few people with the majority’s sufferings.