Sudden cramps can be treated as follows: 1, as soon as possible to lift the state of the spasm, for most of these cases, can be taken to reverse stretching, that is, to stretch in the opposite direction of muscle contraction, such as the back of the calf muscle cramps, then ask the patient to straighten the knee joint after pulling the toe with the hand, so that the ankle and foot excessive dorsal extension, after which can relieve the back of the muscle 2. Patients should stay away from the triggering factors as early as possible, such as swimming in the water, then go to shore as early as possible; if the patient is running, then rest as early as possible and keep the limbs warm. 3. Patients can drink some soup made of ginger. In addition to this, patients can also properly replenish the relevant electrolytes, such as drinking some light salt water, or eating some fruits. If after these treatments there is still no significant relief, then the patient needs to promptly go to the orthopedic department for consultation.