The utility model discloses an underground comprehensive pipe gallery large-diameter pipeline transportation device which is flexible to move and facilitates pipeline loading and unloading. The large-diameter pipeline transportation device is formed by connecting at least two transportation assemblies in series. the transportation assembly comprises a door-shaped frame; wherein the door-shaped frame comprises stand columns on the two sides and a cross beam connected to the top ends of the stand columns, the base is connected to the bottom ends of the stand columns, the trundles are installed on the lower bottom face of the base, the electric hoist is installed in the middle of the cross beam, and the pipeline clamping part is hung at the lower end of the electric hoist. The transportationdevice is convenient to operate, flexible to move and high in automation degree, the manual carrying strength is reduced, and the construction efficiency can be greatly improved.