Personal computing devices, such as smart phones and PDAs, are widely used, and the actual demanded for many disciplines or engineering, which evoke the emergence and extensively studying of opportunistic networks. Opportunistic networks could be built up in many cases in physical environment to opportunistically provide many kinds of service required by users. The paper characterizes the social network of opportunistic networks, and describes its importance for service platform from several aspects, such as social structure.Based on the social network properties of opportunistic networks, the model of users' social behavior would be built, then according to the structure of human society communicates relationship between users could be established. Finally, opportunistic computing service platform would be achieved to resource management and service provision to meet the requirements of users. Opportunistic networks possess application prospect outstandingly, while there are many problems and challenges related to it, which be worth further studied.%智能手机、PDA等个人计算设备的广泛使用以及各种学科或工程的实际需要促进了机会网络的产生和广泛研究.机会网络的组建适用于实际环境中的大量场合,可以为用户机会性地提供多种需要的服务.文中提炼了机会网络的社会特性,并从社会结构等若干个方面描述了其对于服务平台的重要性.基于机会计算的社会网络特性,可以构建用户的社会行为模型,然后根据人类的社会结构,建立用户之间的通信关系,最后组建机会计算服务平台管理网络内的各项资源,以实现用户获取所需要的服务.机会网络有广泛的应用前景,论及的问题、遇到的挑战都很多,值得进一步发展.
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