The utility model discloses a dangerous goods transportation monitoring system based on position tracking, including information processing module, information processing module's interface is connected with a jar interior parameter detection module, alarm module and vehicle location and tracking module respectively through data connecting line, information processing module's one end is connectedwith vehicle interval monitoring module, the outer leak testing module of car and cloud platform information processing center respectively through data connecting line. The utility model discloses an install the locomotive at haulage vehicle, the vehicle interval monitoring module monitoring haulage vehicle's of the rear of a vehicle and car both sides side automobile driving information on every side, the alarm was carried out to the alarm module when outside vehicle was close to, remind the vehicle to keep the interval, install outside the car all around of haulage vehicle's transport casejar leak testing module real -time supervision hazardous articles and reveal the condition, the security of transportation improves, simultaneously will monitor data transmission to cloud platform information processing center, make things convenient for the remote monitoring, improve reaction throughput.