Occurrence of calf strain, is the calf area by external forces, resulting in local muscle soft tissue injury, local capillary bleeding, there are subcutaneous swelling, bruising. The patient feels localized pain, and serious cases will affect weight-bearing activities. After the occurrence of this injury, the patient can be instructed to rest in bed, prohibit standing activities, and at the same time to elevate the lower limbs. In the calf area can be applied externally to activate blood circulation and eliminate blood stasis, reduce swelling and pain relief creams, give local hot compresses, Chinese medicine fumigation. Combined with physical therapy instrument baking electricity, infrared therapy instrument treatment, bioelectricity treatment, low frequency electrotherapy and other methods, can accelerate the local blood circulation, promote the absorption of hemorrhage, reduce swelling, but also can relieve pain.