The advantage of ceramic liners are as follow: 1. the ceramic liners can not only adapted to same tough environment such as deep oil reservior, hard stratum and severe earthless, but also can be used for offshore oil and natural gas exploration. 2. Compared with Bi-Metal liner, the serivice life of the ceramic liner is 5-10times higher, its maximum and minimum service life can reach more thna 4000 and 2000 hours respectively. 3. the Zirconia ceramic liner with have used the phase transformation toughen technology has various advantages such as wear-resistance, erosion-resistance, hight-pressure-resistance, high strength and high hardness. 4. the cost of shipment, maintaince, labor and storage in the drilling works can be reduced. 5. Compare with the Alumina liners, the zirconia liner have better toughness properties and longer service life, it can also reduce piston wear and water comsumption for lubrication. 6. Ceramic liners for drilling mud pump are widelu used in Coal, Non-ferrous metal, drilling field to improve drilling efficiency.