Research and development of advanced haze monitoring technology to observe and understand the characteristics of atmospheric haze pollution are the basis for the determination of haze pollution control measures in China. Firstly, the development status, challenges and problems are presented. Secondly, the researches and development of atmospheric environmental monitoring techniques in the Chinese Academy of Sciences are introduced, including the atmospheric LIDAR for fine particles, ozone and water vapour measurement, the atmospheric oxidation (HOx, NO3 radicals) online measurement systems, the large-scale smog chamber, the observation platform for physical and chemical properties of atmospheric haze, and the atmospheric haze stereoscopic monitoring network for the Beijing-Tianjin-Hebei area.