Neck cramps after radiotherapy for nasopharyngeal cancer are usually caused by muscle tension resulting in spasm when the neck is in the same position for a long time. Muscle spasm can be relieved by massage, hot compress and pinching acupoints. Neck cramp after radiotherapy for nasopharyngeal cancer is generally caused by muscle spasm due to muscle fatigue and tension when the neck is in the same posture for a long time. The spasm can be relaxed and the pain eliminated by massaging slowly adding force and continuously pulling the spasmodic muscles. The pain will be relieved after applying pressure on Hegu acupoint on the hand and Renzhong acupoint on the upper lip for 20 to 30 seconds. Neck cramps after radiotherapy for nasopharyngeal cancer may also be caused by dehydration and cold stimulation. If it is caused by dehydration, fluid rehydration should be carried out in time, and if it is caused by cold stimulation, muscle cramps should be kept warm in time.