According to the plastic surgery experts in our hospital, there is no need to use a knife to bury the thread in double eyelid surgery. There are many surgical methods for burying the thread in double eyelid surgery, such as intermittent suture or continuous suture, full-thickness suture or partial suture of the upper eyelid, needle insertion from the skin or conjunctiva, one or more stitches, suture removal or no suture removal, etc. It is worth mentioning that the method of double eyelid surgery through conjunctival approach is basically eliminated now, and the more common method is continuous or intermittent catgut embedding through percutaneous approach. Knowing the process of double eyelid catgut embedding, you will know that double eyelid catgut embedding does not need a knife.