The invention discloses an ultralow-temperature combined corrugated pipe compensator. The ultralow-temperature combined corrugated pipe compensator comprises end connecting pipes, corrugated pipes, flow guiding pipes and a middle connecting pipe, and the middle connecting pipe is connected with the end connecting pipes arranged at the two ends through the corrugated pipes; the straight edge segments of the two ends of each corrugated pipe are coaxially arranged on the outer wall of the corresponding end connecting pipe and the outer wall of the middle connecting pipe in a sleeving mode respectively; a trumpet-shaped mouth fixedly connected to the inner wall of the end connecting pipe at the inlet end faces the first flow guiding pipe arranged at an inlet, and a trumpet-shaped mouth fixedly connected to the inner wall of the middle connecting pipe faces the second flow guiding pipe arranged at the inlet; the outlet end of the first flow guiding pipe stretches into an inner hole of the second flow guiding pipe to achieve clearance fit; a second radial sealing structure is arranged between the inner wall of the sleeved end connecting pipe at the outlet end and the outer wall of the second flow guiding pipe; for further improvement, a first radial sealing structure is arranged between the inner wall of the sleeved second flow guiding pipe and the outer wall of the outlet end of the first flow guiding pipe; reinforced joints are arranged between the straight edge segments of the corrugated pipes and the outer walls of the end connecting pipes and the outer wall of the middle connecting pipe respectively. According to the ultralow-temperature combined corrugated pipe compensator, the condition that impurities or granular media enter the inner cavities of the corrugated pipes can be avoided, the service life is long, and the ultralow-temperature resistance is good.