Atmospheric aerosols can affect climate by scattering and absorbing solar radiation. There have been a lot of observing and modeling researches about the issue. But understanding of their influence on climate change is beset with uncertainty, for the observation history of aerosol is short and until now there has been no systematically observing data about global aerosol. So far many efforts have been made for improving our know ledge. We introduce some of recent results from observing and modeling researches about aerosols and the further work which will be carried out or will be worth being carried out.