Based on the non-dimensional general function for the thermal structure features presented by S.A.Kitaigorodsky et al. (1963, 1965)[10, 11].this paper tries to establish semi-empirical and semi-theoretical models bfor the thickness of the upper homogeneous layer of the ocean, thermocline intensity and lower oundary depth of thermocline by consecutive observations from 159 stations in the Bohai Sea, Huanghai Sea and East China Sea in the warm half of the years from 1957 to 1964 and the heat budget at the sea surface computed with the simplified computing formulae proposed by Wang (1983)[22].This model indicates the main factors forming the thermal structure features in the upper layer of the ocean and their function.With the model, one can directly use the sea surface temperature, air temperature and wind speed to compute the thermal feature in the upper layer of the ocean.