Abstract: Aiming at the problems of error uneveness in regular hexagon grid location algorithm and nodes redundancy in the square grid positioning algorithm, a new centroid localization algorithm based on the anchor nodes equilateral triangular distribution was proposed. The algorithm used the theory of meshing to verify the rationality of the grid and explored the effects of parameter on this new algorithm through experiments. The simulation results showed that the algorithm in the case of simple structure, relatively small hardware investment and power consumption, improved node localization accuracy. However, the number of anchor nodes and computation have increased in this algorithm, subject to future improvements.