Calf pain caused by going downhill is mostly a normal physiological phenomenon, caused by the accumulation of lactic acid in the muscles, which can usually be relieved by general treatment, physical therapy, medication and so on. 1. General treatment: pay attention to rest, ensure adequate sleep, generally can be relieved. 2. Physical therapy: local hot compresses and massage can promote blood circulation, accelerate lactic acid metabolism and relieve the symptoms of calf pain, and stretching of the calf can help relieve pain. 3. medication: when the pain is obvious, you can also use non-steroidal anti-inflammatory drugs such as diclofenac sodium ointment externally. Calf pain after going downhill, if after rest, hot compresses and other simple treatment still can not be relieved, it is recommended to seek medical attention in a timely manner, under the guidance of the doctor for standardized treatment.