The invention discloses a four-way pressure balance expansion joint. The four-way pressure balance expansion joint comprises a four-way pipe, a middle connecting pipe and two end pipes; the two end pipes are arranged on the left side of the middle connecting pipe and the right side of the four-way pipe respectively, and the middle connecting pipe is arranged on the left side of the four-way pipe;a first corrugated pipe is arranged between one end pipe and the middle connecting pipe, a second corrugated pipe is arranged between the middle connecting pipe and the four-way pipe, and a third corrugated pipe is arranged between the four-way pipe and one end pipe; the two sides of the first corrugated pipe, the two sides of second corrugated pipe and the two sides of the third corrugated pipe are fixed through fixing pressing plates, and end connecting plates are correspondingly arranged on the two end pipes; and a plurality of connecting rods are arranged on the two end connecting plates,a first flow guide cylinder is arranged at the lower end of the first corrugated pipe, a second flow guide cylinder is arranged at the lower end of the second corrugated pipe and a third flow guide cylinder is arranged at the lower end of the third corrugated pipe, wherein each of the first flow guide cylinder, the second flow guide cylinder and the third flow guide cylinder comprises a left sidepipe and a right side pipe, and sealing rings are arranged between the left side pipes and the right side pipes. The four-way pressure balance expansion joint is simple in structure and reasonable indesign, and the problem of fluid leakage caused by breakage generated under condition of serious deformation can be solved.