As of September 30, 2007, there were 2,029 A-level catering units (5.3%), 2,274 B-level catering units/kloc-0 (32.4%), 22,905 C-level catering units (60.4%) and 762 D-level catering units (1.9%) in Beijing. Compared with August, the number of A-level and B-level catering units increased by 2 182, with an increase of 18 percentage points. The proportion of A-level and B-level catering units increased to 37.7%, and the number of D-level catering units decreased by 25 1 unit, with a decrease of 24.8 percentage points. Among them, Haidian District, Chaoyang District, Xicheng District, Chongwen District and Yanqing County are the top five districts and counties where the number of A-level catering units has increased; The top five districts and counties where the number of D-class catering units decreased were Mentougou District, Haidian District, Chongwen District, Tongzhou District and Xuanwu District.