Research Conclusions: The surveying devices will become lighter and integration with higher accuracy，more functions， easier operation，and digitisation ， modularisation and automation to collect and process the data. It is the general development trend of the survey technology for railway construction to establish construction survey and design data bank and improve the applicable mode of “Integration and Intellectualization” for railway survey and design in order to meet the requirements for more and more construction of high一speed railway and passenger dedicated railway line crossing and sea.