Tendon ruptures do not heal on their own. When a tendon is ruptured, in most cases, it will retract, separate, and displace, requiring prompt orthopedic treatment. The tendon is like a tightly stretched rope, if it is broken in the middle, the tension on both sides will cause it to retract toward the ends and not be able to rest closely together, so active healing cannot occur. If the tendon is not completely broken, it can be fixed with plaster or brace to help it repair itself; if it is completely broken, with shortening and atrophy, it can only be treated by surgery, with good local fixation after surgery to prevent 2 ruptures, while strengthening nutrition and local physiotherapy to promote blood circulation, and supplemented with drugs to promote tissue growth, which can help its recovery. The healing time of the tendon is usually The tendon healing time is usually 3-4 weeks, and the healing time of lower limb tendon is slightly longer than that of upper limb tendon, about 6-8 weeks, while the healing time of Achilles tendon is longer, at least 2 months.