Abstract: The impact of haze pollution on environmental regulation is a topical subject concerning scholars，but the differentiated influence of different types of environmental regulations on haze pollution remains for in-depth study. Based on the panel data of 30 provinces， autonomous regions， and municipalities directly under the central government（not including Tibet，Hong Kong，Macau，and Taiwan regions） in China from 2000 to 2017，a Spatial Durbin Model is established to analyze the impact of heterogeneous environmental regulations on haze pollution and the spatial overflow effect. The results show that while the command-control type and the public-participation type of environmental regulations have a prominent inhibiting effect on haze pollution，the market-incentive types of environmental regulations do not obviously reduce haze pollution. If the impact of environmental regulations on haze pollution is broken up into direct effect and indirect effect，it is then discovered that the command-control type and the publicparticipation type of environmental control tools can not only improve local haze contamination but also have a positive influence on the haze treatment of neighboring areas. In order to give a full play of various types of environmental regulations in the treatment of haze pollution，it is an important policy choice to optimize the combination of environmental regulation tools，enlarge investment on green industries，and speed up the establishment and perfection of a regional joint prevention and control mechanism.

Key words: haze pollution, heterogeneous environmental regulation, Spatial Durbin Model, spatial overflow effect