Neck pain after swimming may be caused by too much exercise, wrong force generation and a history of cervical spondylosis. 1. Exercise too much: If the exercise is too much when swimming, the body cells do not have enough aerobic respiration, so that the body lactic acid accumulation, which can cause generalized soreness, including the neck. 2. Incorrect force: If the neck compensatory force is caused by the lack of upper limb strength during swimming, incorrect force will cause neck muscle or ligament spasm, which will result in pain at the neck. 3. History of cervical spondylosis: people with a history of cervical spondylosis such as cervical disc herniation and cervical spinal stenosis may cause some stimulation to the neck during the swimming exercise, leading to the recurrence of the disease, so they will have neck pain. There are many reasons for neck pain after swimming, if it is difficult to relieve, you need to consult a doctor in time, by professional doctors to clarify the cause of the disease, and then formulate an individualized diagnosis and treatment plan.