The data of the field experiment in 1993 was used to study the characteristics of the sealand breeze circulation and the thermal inner boundary layer on the west coast of Liaodong peninsula.Some results of this work are given,including the emerging frequency of sealand breeze in every month,starting and ending hour of the sea breeze,distance of the sea breeze going inland,etc.,in the mean time,the height of the thermal inner boundary layer changing as a function of the distance away from the coast is discussed.