The utility model relates to an earth pressure shield constructs dregs improvement dregs viscous resistance force test appearance contains two block upper and lower steel sheets and ergograph, wherein, lower layer steel plate fixed mounting, upper steel plate ruler is very little to be greater than lower layer steel plate, and in the middle of the dregs was located two blocks of steel sheets, theergograph was connected with upper steel sheet. The advantage: 1 )Can simulate the earth pressure shield and construct dregs entering pressure chamber with the viscous resistance of pipe wall behindthe spiral casting ware to help knowing the adaptability between dregs improvement state and stratum characteristic, groundwater and the buried depth of tunnel, 2 )The blending of dregs is measured for rotary viscosimeter, the utility model discloses do it construct pressure chamber at the shield more to accord with the dregs low flow state in the spiral casting ware, 3 )It is experimental to be fit for developing dregs improvement in the shield driving job site.