It is not possible to generalize whether leg swelling during nerve recovery is a good sign. Generally speaking, it may be caused by dysfunction, poor circulation in the legs, or deep vein thrombosis. 1. Functional disorder: Nerve injury can cause functional disorder, and leg swelling is a functional disorder phenomenon, which is a common manifestation in the process of recovery, but it does not necessarily indicate functional recovery. It is suggested that some neurotrophic drugs, such as vitamin B1, methylcobalamin tablets, etc., can be used to improve the condition under the guidance of doctors. 2. Poor blood circulation in the legs: patients with nerve injury have less activity in the legs, which can easily cause poor blood circulation in the legs, resulting in swelling of the legs, which can be relieved by localized hot compresses or massages. 3. Deep vein thrombosis: patients with nerve injury may suffer from deep vein thrombosis due to the inconvenience of activity and keeping a posture for a long time. It can be manifested as swelling of the affected limbs, pain and fever, superficial varicose veins and so on. Patients are advised to seek medical treatment as soon as possible for targeted treatment. Swelling occurs in the leg during the nerve recovery period for a variety of reasons, and it is recommended that patients consult a doctor in time to clarify the cause and carry out targeted treatment.