Abstract: Serv ice fo r nex t g eneratio n netw ork based on Parlay API ( application prog ramming interface) i s studied. A component based netw o rk service wi th i ts implementation is presented to meet the need fo r high ef ficiency service dev elo pment. At fi rst , the process o f compo nent based serv ice creation is int roduced, the compo nents architecture is described and the compound component is emphasi zed. Then the functio n, archi tecture and ex ecuting mecha nism of service component and service f ramew o rk is presented. The analy sis of simplici ty and hig hef ficiency are fo llowing. Finally , the dev elo pment and problem of compo nent based service are di scussed.

Key words: service creation, Parlay, next generation network, component, open application programming interface