The current IoV terminal commonly used GPS/LBS dual-mode positioning. Positioning accuracy depends on the base data reported by the terminal. When the terminal in the tunnel

garage or peripheral base station sparse situation

LBS positioning will appear larger error. This paper propose a rectification algorithm of location based service. The algorithm is based on the historical data reported by the terminal to identify the location of the current deviation and trend analysis. To some extent

the positioning error is reduced and accuracy is improved.