Atmospheric circumstance is a huge, complex system with several elements influencing each other. Regional atmospheric circumstance is not only affected by the whole air environment but also has a close relationship with regional economic developing level, industry location and effectiveness of environmental protection, etc.. How to monitor and control PM 10 in atmospheric pollution now is a focus. Because of the randomness and uncertainty of PM 10 on time, space and quantity, and the unstable character of air protection,the relationship between the regulation measures and controlling PM 10 pollution becomes a "gray system ". The article uses the slope linkage analyze theory to appraise the corresponding effectiveness of each means of atmospheric prevention originally and take these as a proof in Chongqing city during the ninth Five year Plan.