For better interpretation of geologic systems using information of 3-D seismic exploration, relations of rocks wave velocity and stresses are studied in rock physical experiment and practice applications. Geologic systems are made up of multi-phase, such as solid, liquid, gas, many kinds of mineral and different types of structures, whatever scale is, they can be simulated by generalized multiple porosity media geologic models, rock wave velocity is equivalent velocity of asymmetry geological systems at some scale. So, geologic settings are key dominate factors of media wave velocity at different scale. Weather in seismic exploration or in experiment, there are relationship of effective stresses with elastic modulus and wave velocity of rocks, coherence of seismic wave velocity and stresses will be base of further studying of geologic systems.