Abstract: The data acquired from moored sensors and shipboard hydrographic instruments of AEYFI 05(Acoustics Experiment of Yellow Sea Oceanic Front and Internal Waves) are processed.Both of the spa-tial temporal statistical and correlative characteristics to temperature are analyzed,and the sound travel-time statistical character is calculated too.Results indicate that the frequency spectrum of No.1 Normal Mode travel-time fluctuation is qualitatively similar to the one of temperature time sequence near thermocline,and two spectra present ω-β(β≌1.7-1.8) attenuation for f>30cpd,and both include coherent-structures.The mathi-matic relationships between time and sound-speed fluctuation of Normal Mode propagation are given by the Normal Mode perturbation theory which is used to explain the qualitatively relation between two spectra.