Over the past decades，research on atmospheric pollen has aroused a great worldwide interest by the public and scientists. Its has become an international project that has relevance in agriculture，environment，medicine and human health. Atmospheric pollen concentrations in a particular region vary markedly in response to geographical location, vegetational component, and various meterological parameters on many different time scales. Generally, during the 24-hour day, the highest pollen concentrations are observed at daylight, the lowest values are registered at night. During one year, high pollen concentrations occur in spring-summer, and low values during winter. Tree pollen is the dominant element in the spring-summer season, while weed and herb pollen is the main element in autumn. Forecasting study is the important aspect of atmospheric pollen. In recent years, a number of forecasting studies have been carried out to quantitatively evaluate diurnal, annual, seasonal variation of atmospheric pollen using numerical models. Meteorological parameters can also be predicted depending on the monitoring of atmospheric pollen. Finally, the future research directions of atmospheric pollen are discussed.