To solve the slurry leakage problem of high-pressure jet grouting pile in construction of stone slag layer,the paper compares measures such as sand-filling,pressure-reducing,cement slurry and filling grouting and get to know that the filling grouting measure achieves obvious effect,and when the slurry leakage is not serious,with simple control measures (sand filling,adjustment of construction parameters,etc.),the normal operation of high-pressure jet grouting construction can be guaranteed.