1, cold compress method, soaking spasmodic limbs with ice packs or ice water for 5- 10 seconds can immediately relax spasmodic legs.

2, hot compress method, apply a hot towel to the affected area, so as to achieve the purpose of unobstructed blood vessels. In addition, we should pay attention to supplement calcium and vitamin D in daily life and do more appropriate exercise.

3. Leg cramp is a spontaneous tense contraction of muscles, which will lead to muscle stiffness and unbearable pain. Long-term exercise makes the lower limbs tired or lack of rest, which leads to the accumulation of lactic acid in the thigh, thus causing muscle spasm.