The utility model provides a road bed slip casting pipe, includes 5, water glass of grout slip casting pipe slip casting pipe 4, outer tube 8, 4 suits of water glass slip casting pipe form hollow structure between, on grout slip casting pipe 5, managing 4 outer wall upper ends in the slip casting of water glass and being equipped with water glass entry 3, the outer wall cover of managing 4 lower extremes in the slip casting of water glass is equipped with outer tube 8, be equipped with the water glass honeycomb duct 6 that extends to in the outer tube 8 on water glass ascending pipe 4, the utility model has the advantages of convenient to use, double -barrelled reposition of redundant personnel and from the anchor to solved the slip casting pipe by the thick liquid instead push away, waterglass and grout sharing take place for one tub to block up the scheduling problem, is applicable to improvement such as highway subgrade disease.