The invention is an intelligent traffic data analysis system based on big data, comprising a data loading module, a traffic statistical analysis module, a road travel time analysis module, a vehicle trace analysis module, an optimal path recommendation module and an OD analysis module, wherein the data loading module writes the traffic and checkpoint data generated by the traffic infrastructure inthe HBase; the traffic statistical analysis module implements lane flow analysis, phase flow analysis and direction flow analysis; the road travel time analysis module realizes calculation of all travel time of the road or a route, travel time cluster analysis, plan evaluation and congestion state broadcasting; the vehicle trace analysis module counts vehicle traces within a specified time range,and analyzes and displays the vehicle traces; the optimal path recommendation module recommends an optimal path to users based on the congestion state of the road and the average travel time of the path; the OD analysis module counts the number of vehicles at each route and statistically analyzes trips. The intelligent traffic data analysis system based on big data has massive data processing capability, many functions, high degree of integration and low degree of coupling, and can be integrated into an actual road traffic control system.