A kind of tissue treatment device, includes circuit driver, electrode and plasma arc concentrating element, and all of which is arranged inside the shell. The circuit driver generates plasma arc source signal. The electrode response generates plasma stream in the plasma arc source signal. The plasma arc concentrating element focuses the plasma stream to pass through the outlet opening of the shell and reach the target spot on the target tissue for treating subject, to be heat-treated to the target tissue. In some embodiments, the circuit driver controls the temperature rise of the target tissue by modulating fundamental frequency, power level, pulse frequency and/or the pulse duty factor of the plasma arc source signal.
