To address the issues of input delay and actuator saturation in the operation of high-speed trains, a new dynamic surface funnel control scheme was proposed, which ensures the stability of the control system, eliminates the influence of delays, and enables the train to have ideal tracking performance without saturation. Firstly, a longitudinal dynamics model of the high-speed trains with input delay and saturation was established through force analysis. Then, based on the new dynamic surface control framework, a novel dynamic compensation and constraint mechanism was proposed to address the dual constraints of time delays and saturation, which ensures the tracking error was strictly confined within a dynamic funnel boundary and achieves asymptotic tracking without saturation. Finally, the CRH380A high-speed train was employed as the controlled object for simulation verification. The results show that the designed controller effectively suppresses the input delay effect of the train and remains stable when the input saturation occurs, and the train quickly recovers the ideal tracking performance without saturation. The proposed method can effectively compensate for the input delay effect and constrain the input saturation, effectively improving the operational safety and reliability of high-speed trains.