The utility model relates to a CNG storage and transportation technology field discloses a bundling lightweight long -tube trailer, organize including skeleton semitrailer and the gas cylinder of fixing on the skeleton semitrailer, the bottle material of each gas cylinder of gas cylinder group is the high -strength steel. Compare wall thickness reduction, weight loss with same size gas cylinder current on the market to on the basis that accords with the transportation standard, increased the carrier gas volume, reduced the cost of transportation. Furtherly, gas cylinder group fill the trunk line that unloads the air pipe on be provided with urgent ball valve, and the both sides at the long -tube trailer rear compartment pipeline are arranged to urgent ball valve for can directly blind off a line from long -tube trailer's side under emergency, avoid being close dangerous back operation storehouse, optimize back operation storekeeper way, improve the security, eliminate the potential safety hazard among the operation process.