The application of a fixed structure for installation of LED display equipment on platform of existing high-speed railway station is studied. This kind of column-holding display screen structure fixes the LED display between the two supporting columns on railway platform. The limitation that the old existing high-speed railway station can not be constructed for a long time and the reinforced concrete structure on railway platform can not be destroyed due to the frequent running is solved. Based on 3D modeling and numerical simulation, a series of static structural analysis are carried out for the structure. It includes static nodal stress analysis, strain analysis and displacement analysis under extreme working conditions. The results show that the fixed structure is safe and effective, and the installation and application of LED display equipment on the existing high-speed railway platform are realized. In order to study the working reliability of this kind of column-holding display screen, the modal analysis of equipment structure with prestress is carried out by using numerical analysis software.Under the action of wind load, the deformation degree of the structure under different frequencies is analyzed.The prevention of earthquake disaster by this structure is also analyzed. The validity and application value of the fixed structure of LED display equipment in railway information display technology, especially in existing high-speed railway stations are verified.