Abstract: A brief research report on an electrostatic electron cyclotron resonance maser (EECRM) and an electrostatic free electron laser (E-FEL) established in an electrostatic centrifugal system will be given systematically.In our studies.the mechanisms and some interesting phenomena of the EECRM and the E-EEL have been revealed clearly through theoretical analyses and the stimulated EECRM radiation has been proved through experimental investigations.It is demonstrated that these electrostatic co herent electromagnetic radiation sources!EECRMs and E-EEl.s I are of great interest theoretically and practically.