The threads of laceration stitches will fall off in about half a month. There is some individual variation in how long it takes for the threads of laceration stitches to fall off naturally, but most people will fall off on their own in about half a month or so; however, if there is an infection in the wound that results in redness, swelling, or a lot of oozing, the amount of time that it takes for the threads to fall off naturally may be relatively longer or shorter, depending on the individual. Most of the patients’ laceration stitches use absorbable threads, and the part of such threads left in the body will be naturally absorbed by the tissues over time. Patients are advised to pay attention to the protection of the wound in general, avoiding contact with water and changing dressings in a timely manner; avoiding heavy sweating before the wound has healed; avoiding strenuous exercise or strenuous work; and preventing the wound from becoming infected or recovering poorly. If you feel unwell, you should go to the hospital in time and consult your physician.