Because of low cost and easy sharing, it has become more and more popular to apply internet in financial area. People also changed their consumption behaviors. More and more people start to use application tool and service on the Internet such as Internet banking. The study applies Technology Acceptance Model (TAM) and enhances perceived risk, safety, privacy and trust to investigate technology using behavior. The empirical result shows that perceived risk has negative impact on trust, perceived usefulness and perceived ease of use. Both safety and privacy have positive impact on trust, perceived usefulness and perceived ease of use, respectively. Besides, trust, perceived usefulness and perceived ease of use directly influence both behavior intention and actual behavior.