The dispersion relation for the drift‐cyclotron loss‐cone mode in the presence of the lower hybrid wave is calculated using both electrostatic and finite &bgr; models. It is found that lower hybrid wave fields with frequency &ohgr;0can stabilize the mode if &ohgr;lh<&ohgr;0<&ohgr;+, or &ohgr;0<&ohgr;−<&ohgr;lh, where &ohgr;lh= &ohgr;pi/(1+&ohgr;2pe/&ohgr;2ce)1/2, &ohgr;±= [±A+(A2+4&ohgr;2lh)1/2]/2, andA= &ohgr;2lh&egr;/&ohgr;cik. If the plasma &bgr; is greater than a critical value &bgr;c, there is another stabilization region, namely, &ohgr;0≳&dgr;&ohgr;lh, where &dgr; is a numerical constant. Even though the stabilization effect is small in this region, the lower hybrid wave frequency for electron heating should be in this region in order to avoid enhancing the particle loss rate.