The renovation of old roads is the primary part of road maintenance. There are two kinds of regeneration methods for old roads, i.e. hot and cold recycling system regeneration. There are actually four kinds as follows: CIR, cold plant mix regeneration, in situ geothermal regeneration and hot plant mix regeneration. Among them, the reconstruction of rural grass-roots surface structure is not expected to be very good, and no in-situ cold recycling technology is available, which can complete the local conversion.

不但能夠降低材料的浪費，及其減少物流成本。另外它不容易危害一切正常的總流量。不毀壞路面道路綠化和植物群落，它是優選的道路養護施工人員。但它的缺陷是有關機器設備是昂貴的，而且該材料勻稱組成物的設計方案差別會導致艱難。

It can not only reduce the waste of materials, but also reduce the logistics cost. In addition, it is not easy to harm all normal total flow. It does not damage the road greening and plant community, and is the preferred road maintenance construction personnel. But its defect is that the relevant machinery and equipment are expensive, and the design differences of the symmetrical components of the material will lead to difficulties.

為底座上的道路冷再生攪拌機械，及其一個下一層，維護保養二級公路的表面層。此項技術的優勢是過程管理，該技術是完善的，缺陷是，以便完成在遮蓋表面的一定薄厚需要的技術。

For the base of the road cold recycling mixing machine, and its next layer, maintenance of the surface layer of the secondary road. The advantage of this technology is process management, the technology is perfect, the defect is, in order to complete the covering surface of a certain thickness of the required technology.

本地熱再生技術合適于防止肌膚再生和維護，并以這類方法的材料，還可以靈活運用，物流成本低,但其高些的機器設備成本費，醫不好的構造的病癥;熱拌廠適用再生聚集再生，材料成份設計方案嚴苛的方法，也是有優良的技術適用，但很大的機器設備及有關化學物質轉換成本費.

Local thermal regeneration technology is suitable for preventing skin regeneration and maintenance. Materials in this way can also be used flexibly with low logistics cost, but it has higher cost of machinery and equipment and can not cure the structural diseases; The hot mix plant is suitable for recycling, gathering and recycling. The design scheme of material composition is strict, and it also has excellent technology application, but it has a large cost of machinery, equipment and related chemical substance conversion