Abstract: The stimulated Raman scattering of incident pump wave caused by a magnetized intense relativistic electron beam is analyzed theoretically. The results show that the magnetized beam can increase the gain of the free electron laser if the electron cyclotron frequency Q// in the axial static magnetic field is equal to the frequency i of the incident pump wave in the electron beam frame of reference. In this case the growth rate is i/i- Q// times of that for the unmagnetized beam.