Fracture detection plays an important role in coalbed methane exploitation and coal mine safe production. The welldeveloped vertical fractures are theoretically equivalent to transversely isotropic media with a horizontal symmetry (HTI). Using seismograms of HTI model, the paper studies multicomponent seismic response of vertical fractures in coal beds, and polarization characteristics of PSV wave. Based on the analysis above, this study analyzes practicability and mechanics of fracture azimuth inversion method using azimuth gather for the purpose of industrial application. The paper proposes a fracture parameters inversion technique using the stack profile of two horizontal components to gain occurrence of fractures of coal beds underground, and this method has been proved to be precise and reliable in field data processing.