The E

B representation of constitutive relations are given

the wave equation in moving medium and the equations which the longitudinal components of field quantities E

H satisfied are derived. For electromagnetic wave normally incident in an oncoming plasma half space

the wave reflection and transmission are solved

the dispersion relation and frequency relation of transmission wave are obtained

its frequency shift

wave cutoff and propagation reversion are discussed.For a pulse wave inczident

the reflected pulse compression and pulse amplification are calculated.