Drain-pipe capable of preventing soil base liquidizing

The utility model discloses a drainage pipe for preventing the liquefaction of foundation, which is a thin cylindrical pipe made of thermoplastic material by extrusion molding. The cylindrical pipe is hollow and the wall thereof is porous. The utility model is characterized in that one end of the cylindrical pipe is provided therein with a connector that is a hollow pipe and has an outer diameter equal to the inner diameter of the cylindrical pipe. The drainage pipe has good flexibility and excellent drainage effect, and maintains the drainage function even being deformed during earthquake. The drainage pipe is easy to assemble together, to facilitate the pipe laying. The drainage pipe is suitable for the use in construction sites with limited space and is easy to manufacture.