The traditional pseudo-range single point localization model is difficult to obtain high-precision positioning resultsand cannot meet the needs of modern application scenarios, because of factors such as model noise, orbit clock error accuracy andatmospheric error correction accuracy. A pseudo-range single-point positioning method for regional atmospheric augmented isproposed, which can significantly improve the positioning performance. The algorithm uses precision orbit and clock products toreduce the satellite orbit clock error, uses regional atmospheric parameters to weaken the tropospheric ionospheric error, and usesdual-frequency uncombined model to reduce the noise of the observation model. The verification results of the measured data showthat the positioning accuracy root mean square (RMS) of the regional atmospheric augmented pseudo-range single point positioningmethod is better than 0.2 m in the horizontal direction and 0.25 m in the elevation direction, the positioning accuracy is greatlyimproved. The sub-meter pseudo-range single point positioning accuracy has important reference value in practical engineeringapplications.