The invention relates to a transport platform system and an application construction method thereof. The transport platform system includes at least two transport platforms, and each transport platform includes a lifting platform, a lifting part, a base and a rolling part, wherein the lifting platform is provided with a fastening piece, the lifting part is positioned under the lifting platform andconnected with the lifting platform, the lifting platform goes up or down through the lifting part, the base is positioned under the lifting part and connected with the lifting part, and the rollingpart is arranged at the bottom of the base and connected with the base. Through the platform system, combination of supporting and carrying in the process of dismantlement of a support beam is achieved, in the middle of the dismantlement process, no apparatus replacement is needed, the lifting quantity is large, and the process is simple and safe; meanwhile, the transport platform system itself has a lifting function and is less affected by height restriction, thereby being suitable for transport of the support beams of all kinds of floor-height areas. The application construction method of the transport platform system has simple steps and convenient operation.