Taking the Yinggehai Basin for example, the correlations are introduced of mutiwave seismic parameter ratio to hydrocarbon bearing property. The way of getting muluwave seismic parameter ratio is given in the paper. The method that uses two or three muluwave seismic parameter ratios (amplitude ratio, velocity ratio and Poisson ratio) to detect hydrocarbon is given, loo. For the wells drilled, the method is proved to be probable and effective.