Abstract: Restricted by topographical condition，it is difficult to build regular observation station and adopt traditional measuring method in the mining areas in southwest of China.A new method for layout of observation station in mountain area is present.Firstly，the irregular observation station under the complex topographical conditions is laid out，through the construction of parameters model for arbitrary observation line.Then，the GPS technique and the traditional measurement method are combined to optimize the observation station.Finally，the principles of the new observant method and the main steps of observation are described.Practice shows that，this method can well adapt to the mountain areas with complex terrain conditions，and provide the foundation for better research on surface movement and deformation in mountain area.

Key words: Mountain area, Observation station, Irregular, Combined measurement