1. reinforce the base, efficiently allot and diffuse the pressure, prolong the using time;
2. increase the load-bearing capabilities;
3. avoid the base becoming deformed and creaking (for the material washed away);
4. improve the endure, reduce the pressure of the blocking wall, save the cost, prolong the using time, and reduce the servicing;
5. reduce the crook and track, delay 3-9 times of the appearance of the crack, reduce 36% of the thickness of the structure by adding the geogrid into the base and cover of the road,
6. be applicable of all kinds of soil;
7. be easy to construct and reduce the cost.

8. reinforce the carry capacity and prolong the using time of the base;
9. avoid the road subside and crack and keep the road orderliness;
10 provide stability for slopes and avoid the losing of the water and soil;