The incidence of postoperative chest wound infection is 1%-5%, and the morbidity and mortality rate is 25.7%-52.0%. Postoperative sternal infection not only increases the incidence of postoperative cardiac complications and mortality, but also increases the pain and economic burden of patients, and is still an important complication after cardiac surgery. Postoperative cardiac wound infections that do not heal are often combined with deep sternal infections – osteomyelitis of the sternum. This type of wound cannot be cured by simple debridement and suturing. It is necessary to remove the foreign body that fixes the sternum, such as wire or sternal plate, and then fill the sternal defect by muscle flap transfer and close the wound in one stage, which can often achieve rapid and definite wound healing. The stitches of a one-stage sutured wound are removed after 2 weeks and completely cured.