The high β flute lower hybrid drift (LHD) instability is studied in detail. The dispersion relation governing LHD mode with density, electron temperature inhomo-geneities and magnetic drift resonance is derived via gyrokinetic equations. It is found that when ▽Te//▽n the magnetic drift resonance related to ▽Te, enhances the instability and when ▽Te//▽n the resonance reduces the instability. In both cases, the finite βprovides a stability effects and shifts the largest growth rate point to the longer wave length. The analytical and numerical results are in good agreement. Electron temperature anisotropy gives no contribution to LHD mode.
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