A multifunctional device for delaying chest closure of the present invention, comprising: a housing, a first slot body, and a second slot body, the cross section of the housing is octagonal, and the bottom end of the housing is provided with an opening. An adhesive tape is arranged on the opening, and a first draw-in groove body and a second draw-in groove body are relatively arranged in the casing, and the first draw-in groove body and the second draw-in groove body can move relatively. The object of the present invention is to provide a multi-functional device for delaying chest closure, which has simple structure, convenient operation, firm fixation, adjustable sternal distraction distance, and is beneficial to postoperative experimental chest closure; no suture is required, transparent and direct viewing , which is good for observation; convenient for washing, reducing the risk of infection; reliable drainage, avoiding iatrogenic injury, and shortening the operation time as a whole.