It was found that the polymer and the mixed metal hydroxide(MMH) could depress the dispersibility of clay,reinforce the stability of sand and improve the characters of slurry.Then,through the material choice test,makeslurry ability test,anti-pollution test and dispersive drillings recycling test,the polymer-MMH slurry(PMS) was developed.A filtercake with low porosity,high compact and large thickness was made in Fuxing East Road slurry shield tunnel project.It is showed that the PMS has the good utility,and can be extensively applied in the construction of the large-diameter slurry shield tunnel.