To provide a conveying line system and a container body capable of shortening a manufacture time and enhancing an operation efficiency in the conveying line system disposed between one step execution site and another step execution site.

The conveying line system is provided with a main basic rail member 4 disposed between one step execution site and another step execution site in order to convey a predetermined work material, etc.; a turnout rail member 5 disposed between one main basic rail member 4 and another main basic rail member 4 and moved from a position continued to those main basic rail members 4 to an intermittent position; a sub-basic rail member 6 interlocked or uninterlocked with a movement of the turnout rail member 5 and moved from an intermittent position from the main basic rail member 4 to a continued position; and a first support member 3 movably disposed along the turnout rail member 5 or the sub-basic rail member 6 and supporting a container material 2 for supporting the predetermined work material itself or including the predetermined work material, etc.