The temporal and spatial distributions and long-term variation characteristics of haze were obtained for the Chongqing region from 1981 to 2014 by studying surface meteorological data and using the climatic statistic method, Simultaneously, the Mann-Kendall method and the Morlet wavelet analysis are used to discuss the changing trend, the change point and time period. The results showed that Fog days in Chongqing showed a downward trend, the propensity rates of two observations are -10.3days/10a and -7.6days/10a. The spatial distribution of foggy days was mostly in the central and western parts, less in the southeast and northeast, more in the northwest than in the western part of the south. The general trend of haze days is opposite to that of fog days with a trend of upward trend of 12.9 days / 10a, and the period of significant increase in haze days is basically consistent with the period of significant decrease in haze days. The haze days experienced obvious changes before and after 2000 . The distribution of haze is mainly characterized by "the main city as the center, the central and western parts as much, the northeast and the southeast as less".