By using the high resolution SST(Sea Surface Temperature),OLR(Outgoing Longwave Radiation) data measured by GMS(Geostationary Meteorological Satellite) and the tropical cyclone(TC) frequencies with their initiating locations over the NWP(North-West Pacific) ocean,the characteristics of the temporal and spatial distribution of SST(Sea Surface Temperature),ITCZ(Intertropical Convergence Zone) and TC are analyzed in details.It was found that the frequencies,the intensities and the distributions of TC exist an obvious toward-warming uptrend.Furthermore,the necessary condition of GMS-SST larger than and equal to 28℃ is proposed as a critical ocean-surface temperature to the arising and maintaining of TC.Also there exists a contracting axis for TC high frequencies around 10°N.Such contracting axis indeed suggests an unique synchronous-matching mechanism with the warm-water region,defined by GMS-SST larger than and equal to 28℃,and the ITCZ,defined by OLR less than and equal to 240(W·m^-2).That is to say,the strong correlationship exists among the three.