According to the generation mechanism and size, sea spray resulted from wave breaking can be divided into film, jet and spume droplets. The smaller droplets can become condensation nuclei in low clouds and play a great role in climate change. The larger droplets affect the exchange processes of momentum and heat through air-sea interface, which can enhance the development of tropical cyclones. As the most important physical quantity, sea spray generation function, which depends on wind speed, wave, current and atmospheric stability, has been parameterized by wind speed solely due to the lack of observational data. Its results are so greatly uncertain that is difficult to evaluate the influence of sea spray on airsea interaction. It is pointed out that more observations, especially at high wind speed, are needed, and the other factors except for wind speed should be taken into account in the parameterization of sea spray generation function. The estimation method of heat and momentum effects of sea spray on airsea interaction also needs to be modified further.