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The parameter masking secure localization algorithm for wireless sensor networks is used for the issue of secure localization service in wireless sensor network (WSN). The parameter masking secure localization algorithm for wireless sensor network is proposed. The network localization area is divided into evenly distributed grids with phases, and the parameter masking communication signal is designed for the multi-hop node network with malicious nodes participating in the localization, which contains the number of hops and position information. Each hop parameter masking signal in the network is superimposed along the multi-hop path to generate the superimposed signal index phase with the multi-hop path. The phase angle of the parameter masking signal is solved hop by hop and matched with the phase index matrix. The malicious node forwards the superimposed multi-hop marsking signal, which makes the estimated position and hop information difficult to match with the phase index matrix, so as to screen out the multi-hop path attacked by the malicious node. The identity information of nodes in the network can be used to extract malicious nodes, and legitimate nodes are relocated. Through experimental testing, the parameter masking signal with multi-hop superposition eliminates the attack of malicious nodes on the network and effectively suppresses the influence of malicious nodes on the positioning accuracy of legitimate nodes.