The inner calf pain after running may be caused by muscle injury due to strenuous exercise or running in the wrong way, which can be used externally with diclofenac diethylamide ointment, Yunnan Baiyao spray, and so on. 1. Calf muscle pain after running may be due to excessive exercise, resulting in muscle fatigue of the calf muscle groups, excessive accumulation of lactic acid in the skeletal muscles, which cannot be broken down in time, leading to muscle soreness. 2. If you do not do a good job of preparation before exercise for a long time, no muscle stretching, may cause muscle injury after exercise resulting in pain. 3. Post-exercise calf pain, you can accelerate local blood circulation, promote the decomposition of lactic acid, relax the muscles through local hot compresses, massage, stretching muscles, etc.; in addition, you can use drugs externally, such as diclofenac diethylamide ointment, Yunnan Baiyao spray and other analgesic treatments to alleviate the symptoms of pain in calf muscle pain, and you can also take oral treatment of non-steroidal anti-inflammatory drugs such as loxoprofen sodium. Calf pain after running occurs, if the pain is severe, it is recommended to go to the regular hospital for consultation and active treatment.