Abstract: The article analyzes the factors sensitivity of Hefei MSW(municipal solid waste) by use of the sensitive factor method. Aiming at the problem of Hefei city life garbage output grows day by day， we summarizes the factors which influence the production of urban living garbage through literature review. Based on this， we build the AHP structure diagram to analyze the MSW factors， then using multivariate regression model to determine the main factors that influence the Hefei MSW. By analyzing the size of its sensitivity， we come to the most sensitive factors of Hefei MSW. At last， we propose some countermeasures to reduce Hefei MSW.

Key words: MSW, reduction； multi-factor sensitivity analysis