On the CRH5 A EMU,the chutes of the underframe side beams are inevitably defective due to manufacturing anomalies. This paper introduces several different repairing schemes for chute repair. Detailed strength calculation and comparative analysis were carried out for the single-side chute repair,the overall chute repair,and the overall replacement of the underframe beam. The structural design and strength theory calculation in the repair process can provide an important reference for the subsequent repair of the side frame beam.