A center swivel joint for a turbojet fire engine mainly comprises a swivel body, a shell and a water pipe. The center swivel joint is characterized in that ring slots are arranged on the cylindrical surface on the lower part of the swivel body; the end of the swivel body is provided with blind holes radially and axial hole paths axially; the axial hole paths are communicated with the ring slots via the blind holes; a coupling flange is arranged at the end of the snap-fit surface of the swivel body and the shell; the outer wall of the shell is radially provided with oil holes corresponding to the ring slots on the swivel body and is provided with a square check block; the bottom end of the shell is provided with an end cover board fixed on the swivel body; sealing rings for sealing each channel are arranged between the shell and the swivel body; the upper end of the water outlet pipe is provided with an outer coupling flange; and the outer wall of the upper end of the water outlet pipe is provided with a flange fixedly coupled with the swivel body. The center swivel joint has the following beneficial effects: the center swivel joint can realize connection among fuel oil pipes, hydraulic oil pipes and water pipes simultaneously, has good adaptability to diesel oil and kerosene, good sealing effect and small volume; the sealing elements have long service lives; and the oil flow passing through the center swivel joint is high.