The climatic charactors of Land and Sea breeze and it's influence on the local weather in Rizhao are analyzed by using the data of Juxian, Rizhao meteorological stations and the data of sea temperature. The results show that the variation of daily and seasonal land and sea breeze obviously affects the spatial and temporal distribution of the local temperature, precipitation, moisture, and cloud condition. The gradient wind often shows the fectures of sea breeze front and zonal coast front in the afternoon during stronger sea breeze and in the early morning during stronger land breeze. Low cloud and thunderstorm weather phenomena obvously increase,and the land and sea breeze and terrain obviously affect the precipitation distribution.