Abstract: This article proposed a architecture of big data analysis platform with Hadoop as the core, designed MapReduce based distributed prediction algorithm, the process of dynamic ticket pre-assignment and agile seats adjustment, implemented the Railway Intelligent Dynamic Ticket Pre-assignment System. The System made railway ticketing form a closed loop process, which concluded prediction, pre-assignment, monitoring, adjustment, and re-prediction. The experimental data showed the System could effectively enhance the revenue of railway passenger transport products.