The most common causes of double calf soreness are over-exercise, varicose veins in the lower limbs, and lumbar disc herniation. 1. Excessive exercise: If the patient has been engaged in strenuous sports, the muscles at the calf will be easy to accumulate lactic acid, which may cause calf soreness due to the accumulation of lactic acid during metabolism, and the symptoms can be relieved after rest. 2. Varicose veins of the lower limbs: the main cause of varicose veins is venous valve dysfunction and blood reflux, which can cause varicose veins of the lower limbs to dilate, lower limb edema, and calf pain and fatigue. 3. Herniated lumbar intervertebral disc: the herniated lumbar intervertebral disc compresses the nerve root, which can also easily cause soreness and swelling of the calves, and may be accompanied by numbness of the lower limbs. Causes of double calf pain more reasons, but also may be related to chronic strain, osteoarthritis, arterial embolism and other reasons, if the symptoms continue to have no relief, it is recommended to promptly go to the hospital to find out the cause of the disease, by the doctor targeted treatment.