Long distance pipe jacking is very difficult， as both the soil or rocks in the front of the cutting head and the great side frictional resistance need to be overcome. The article discussed the technique of using bentonite slurry to reduce the jacking resistance; systematically described grouting material structure， grouting technology and the mechanism of friction reduction and make the comparison between theoretical and actual values of jacking force in long distance pipe jacking based on the engineering case. The results showed that the effect of friction reduction by slurry injection was very noticeable， which is worth being applied in the similar projects.