Abstract: The traditional maintenance and reformation of road face is expensive and complicated in the craft,and influences the environment greatly.Introducing the special machine of the WR2500 from Germany,it can guarantee the mechanics function on the road face,simplify the construction craft,shorten the construction work period,lower the engineering cost,and make smaller influence to the environment. This text discussed on technology and crafts in the spot colding. The technology is a beneficial attempt to the old road face in improvement and reformation.