Sore calf muscles may be the result of lactic acid accumulation after exercise, muscle soft tissue injury, lumbar disc herniation and other reasons. 1. After strenuous exercise, it is easy to make lactic acid accumulate in the calf muscle, which cannot be metabolized in the short term, and it will cause the symptoms of muscle soreness. 2. Soft tissue damage to the calf muscles can cause aseptic inflammation within the muscles, and the stimulation of inflammation can also cause the calf muscles to produce symptoms of soreness and swelling. 3. Lumbar disc herniation can also cause discomfort in the lower limbs, mainly because the protruding lumbar disc will stimulate the nerve root, such as compression of the sciatic nerve, which will cause discomfort in the lower limbs, and the calf muscles can also show symptoms of soreness and swelling. It is recommended to go to the hospital in time to improve the relevant examination, and then under the guidance of the doctor to treat the symptoms of calf muscle soreness.