To provide a piping arrangement structure of a swing type hydraulic shovel capable of improving the piping arrangement structure to working machine cylinders in the vicinity thereof through swing brackets from a turning frame of the swing type hydraulic shovel.

The swing brackets (30 and 40) are provided to the front end section of the turning frame (2) in a horizontally movable manner, an up and down movable boom (31) and one end section of a boom cylinder (31A) are attached to the swing brackets (30 and 40) and, at the same time, a routing structure of piping is so constituted that the piping is laid in the working machine cylinder of the swing type hydraulic shovel (1) attaching one end section of swing cylinders (30A and 40A). Piping holes (34 and 44) passing through the sides of the swing brackets (30 and 40) from the inside to the outside are formed, the piping to the working machine cylinders (31A and 40A) located in the vicinity of the swing brackets (30 and 40) are carried out through the piping holes (34 and 44) from the insides of the swing brackets (30 and 40).