In 1997, we have constructed a newly designed, high-energy EBIT in Tokyo to study the physics of highly charged ions(HCIs) [1]. In the first stage of the operation, our experimental activity has been concentrated mainly on the spectroscopy of HCIs in the trap. Recently, we have started to use the extracted ions from the trap and to investigate the HCI-interaction with matters. In this report, an overview of the Tokyo-EBIT and some results with it are shown. ©2001 American Institute of Physics.