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In information transfer in WSN, signals are transferred mainly through the sensor. Aiming at the low accuracy of DV-Hop algorithm in node positioning in wireless sensor, this paper first proposes establishing hyperbolic two-dimensional model to determine the distance between anchor nodes and unknown nodes. Then, set the error coefficient to reduce errors between nodes of the sensor. Finally, Steffensen positioning method is used to modify the positioning of sensor’s nodes. Simulation experiment shows that algorithm in this paper improves the positioning accuracy in remote control, and energy consumption between sensors is reduced, so it has certain promotion value.