Ad-hoc networks are basically self organizing and self configuring multi-hop mobile wireless network in which the information packets are transmitted in a store and forward manner from a source to an arbitrary destination via intermediate nodes. The main objective of this paper is to performance evaluation of AODV (Ad-hoc on demand distance vector) and DSDV (Destination sequence distance vector) routing protocols on the basis of different performance metrics. In this paper, an attempt has been made to evaluate the performance of two well known routing protocols AODV, DSDV by using three performance metrics such as throughput, packet delivery ratio and Routing overheads. The Performance evaluation has been done by using simulation tool NS2 (Network Simulator) which is the main simulator.