Ankle sprain with no swelling for one month may be caused by ligament damage or slow recovery, and the treatment includes general treatment and medication. 1. General treatment: if the swelling of the sprained ankle has not been reduced for one month, it is considered that there may be ligament damage. Firstly, it is recommended to wear a brace to protect the ankle joint, and secondly, it can be chosen to apply hot compresses, massages, microwave treatments and other physical treatments, to accelerate the blood circulation of the lower limbs and promote the absorption of bruises, and lastly, it is recommended to elevate the limbs in the leisure time, which is also conducive to the reduction of the swelling. 2. Medication: If it is caused by slow recovery, oral medication can be chosen to reduce the swelling of drugs such as Diosmin tablets, Mai Zhi Ling tablets, etc.; pain is obvious can be added with non-steroidal anti-inflammatory such as diclofenac, acetaminophen, etc.; intravenous administration of drugs to reduce the swelling of drugs can be selected from the heptaphyllum saponin sodium mannitol, etc. The above drugs need to be under the guidance of a doctor, and the patient should be treated with the same medication. The above drugs need to be used under the guidance of a doctor to avoid self-medication. Ankle sprain after a long time without relief, it is recommended to seek medical treatment as soon as possible, after clarifying the cause, targeted treatment.