Sheep intestinal thread was originally extracted from the submucosa of the intestine of sheep, but is now mostly synthetic. Sheep intestinal threads contain collagen and are absorbable sutures. Ordinary sheep intestinal threads are usually absorbed in 4-5 days, while some sheep intestinal threads can be absorbed in 14-21 days. Absorbable sutures are generally absorbed after about 2 months, and they are better and more resistant to tension than the previous sheep intestine sutures, making them easier for doctors to use. The absorbable sutures are better and more resistant to tension than the previous sheep intestine sutures and are easier for the doctor to use. The previous sheep intestine sutures need to be kept dry and cannot be used if water gets into them.