Online social networking sites have become very popularand attracting a large number of participants. OSNare being used as a means for a variety of rich activities.Social network as a dedicated website or applicationwhich enables users to communicate with each otherby posting comments, messages, images, emotions etc(e.g., ebay.com, facebook.com). According to surveys,the usage of OSN is increasing in day by day. Businessprofessionals to analyze customer’s conversations onsocial networking sites, and as a consequence, providesreal-time status updates about their products and servicesaccordingly.In service-oriented environments, social networks canbe used as the means for service consumers to look fortrustworthy service providers with the assistance of otherconsumers. The consumer and provider are unknown toeach and no knowledge about their services. For example,at FilmTrust, which is a social networking site formovie recommendations, a recommendation receiver canevaluate the trustworthiness of a recommender via thesocial network between them. Consider a social networkconsists of lots of buyers and sellers, it can be used bya buyer to find the most trustworthy seller who sells theproduct preferred by the buyer12.In above situations trust is one of the most factorfor decision making and mechanisms for evaluating thetrustworthiness between participants. Trust is the beliefof one participant to another. A social network can bemodelled as a directed graph, Where nodes representparticipants, Where as edges represent relationships of acertain type between them.Figure 1. Service oriented online social networkIn Fig.1, SC and SP represents service consumerand service provider respectively. Edges as the relationsand their trust rate between each participants. As eachparticipant usually interacts with many other participants.In fig.1 the service consumer and service provider havemay be direct path multiple path exist between them. Theservice consumer can evaluate the trustworthiness of theprovider one based on the trust information between theintermediate participants along the path. This process iscalled trust propagation and the path with trust informationlinking the source participant and the target one iscalled a social trust path15.In large scale complex social network the serviceconsumer find a good trustworthy service provider is verydifficult and time consuming. The challenging problem isthat there is large number of service provider and thereexist multiple paths between them. We can search themost trust worthy and best service provider, Some of themneglect the recommendation of other participants and trustinformation in their path. So we proposing a new modelfor finding the best trusted service provider.The proposing model, we using the trust informationfound in the path between provider and consumerand recommendation of another participants about theprovider. Our novel search strategies can help deliverbetter solutions than Other existing methods.The paper is organized as follows: Section 2 introducesrelated work. Section 3 presents the proposes anovel method to find the best trusted service provider.Section 4 presents the experimental results and validation.Finally, Section 5 concludes this paper with a summary.