The definition of specific process and its position and function in CAC MD8O/90 nose productionhave been described.The specific processes required to meet the requirements of MD nose subcontract production and the main difference in the measuring technique of high temperature,surface treatment,heattreatment,and welding technology between Chengdu aircraft company and Mcdonnell-Douglas aircraftcompany before CAC manufactures MD nose are stated specially.We passed the experts certification andprocess survey of Mcdonnell-Douglas by facility modification and tackling the key problems of processestechnology.Look into the developing direction of our specific process technology,we found that internation cooperational is a effective way in enhancing the specific process technology and modernizing the management of us.