If the gastrocnemius and flounder muscles on the back of the leg are strained, firstly, the two muscles should be put at rest, as continued activity will lead to further injury. Second, to take oral Eperisone Hydrochloride tablets to relieve the tension of the muscle, muscle relaxation to help the muscle healing. Third, oral non-steroidal anti-inflammatory painkillers, such as nimesulide, loxoprofen sodium, diclofenac sodium, these drugs can effectively relieve the strain caused by sterile inflammation, reduce pain, reduce inflammatory edema. Fourth, the calf should be elevated above the level of the heart, which can help eliminate the inflammatory edema. Fifth, oral Chinese medicine should be taken to invigorate blood circulation, relieve swelling and pain to increase local blood circulation and promote the absorption of inflammatory metabolites. After the above treatment, the symptoms will be significantly improved within 3-5 days.