Filling method is widely used in the deep process of development of mineral resources. As an important component of filling mining method, filling system stability with fuzzy and stochastic influencing factors, is a complex system which consists of many sub-systems. In this study AHP is introduced, and influencing factors are quantitatively analyzed from five aspects of raw materials, slurry preparation system, slurry delivery system, mining areas and other factors. The results show that pipeline anti-wear technology, the anti-burst pipe way, filling slurry mix ratio, decompression means, filling slurry concentration, slurry filling slump, gelling agent have the greatest impacts on the stability of filling system. The results provide a scientific and reasonable theoretical basis for the design of filling system used in the mine production.