This study focused on the protection effect of geosynthetics installed on geomembrane to resist against puncture load. For this, a puncture unit was used and model test was conducted with various types of puncture load created by different shapes of the puncture tools. The puncture resistance of the installed geosynthetics as protective material for the geomembrane was_varied depending on the types of the geosynthetics and the puncture load. When a single cone shape of puncture tool was used, the protection effect of single cone used on all kinds of geosynthetics is lower than those of other puncture tools. Finally, geocomposite showed the best protection effect against the all puncture tools.