The American hemp state city hall porch's several marble column, the foundation and the lintel girder crack used pressure injection method epoxy patching to repair.They select stick the bottom Epoxy Stone resin mixed with fine sand to repair.The cementation result indicated that the initial seepage cohesional strength is good, but has the micro crevasse after the instrument test discovery marble and on epoxy resin's caking surface.This is closely related to expoxy stone repairing technology.This is stuck with the epoxy resin the stone material surface the slow change to concern. The traditional stone material repairs the tonic mostly to have the pollution of the environment resolver volatility, the hardening time is long, is not easy to use in the fast industrialization treating processes.The development of new stone material has been carried on various countries for example US's kazakh folk song singer rice company develops one kind to use in the ultraviolet ray firming agent resin patching the stone material the new method. The ultraviolet ray solidifies the resin to be possible to absorb ultraviolet ray's energy to carry on crossing linking or the polymerization, causes the material to turn the dense solid state fast by the liquid state.