Abstract: The velocity profile has been analyzed and its gust spatial-distribution characteristics, the evolution, as well as the vertical shear, have been the main points to be focused. Data involved in such investigation include wind profiles from 3 asynoptical tower observation stations and 18 synoptical observation stations. All the cases for over 8-class in wind classification have been rechecked. Wind-breaking processes and their accompanying weather systems for each case have been identified. The analysis have illustrated that in seashore area such as Guangdong coast, the damage parameters relative to wind stress suggested and currently used in relative national criterions and standards are lower than the ones obtained from real-filed observations. The difference between the standards and observations indicated that the damage degree from wind stress in engineering-orientated design should be reconsidered. Thus new wind parameters are proposed in this paper.