When the stitches are torn in normal labor, the stitches can fall off in 6-40 days. In normal labor, the perineum has Ⅰ degree, Ⅱ degree and Ⅲ degree laceration, if the tissue laceration part is more, the intestinal thread is absorbed well. The intestinal line is generally used in common intestinal line, divided into sheep intestinal line and cow intestinal line, the absorption of sheep intestinal line is better than the absorption of cow intestinal line. Commonly divided into thick and thin, there are 1 0, 2 0, 3 0 points, the intestinal line with better absorption by soaking, if not by soaking the intestinal line is harder, the absorption effect is not so good. So what time to fall off the bowel thread exposed outside, depending on what kind of bowel thread is used, the thickness of the bowel thread and whether the bowel thread is soaked when used, overall it takes 6-40 days to fall off the knot of the exposed bowel thread.