Link error and malicious packet dropping are two sources for packet losses in wireless ad hoc network. While observing a sequence of packet losses in the network, we are interested in determining whether the losses are caused by link errors only, or by the combined effect of link errors and malicious packet drop. Because the packet dropping rate in this case is comparable to the channel error rate, conventional algorithms that are based on detecting the packet loss rate cannot achieve satisfactory detection accuracy. To improve the detection accuracy, we propose to exploit the correlations between lost packets. In this paper, we develop a Homomorphic Linear Authenticator (HLA) based public auditing architecture that allows the detector to verify the truthfulness of the packet loss information reported by nodes. This construction is privacy preserving, collusion proof, and incurs low communication and storage overheads. To reduce the computation overhead of the baseline scheme, a packet-block-based mechanism is also proposed. In this paper, we improve the performance and good delivery ratio like throughput ratio, end to end delay ratio and Packet loss ratio in over wireless Adhoc network.