There are several reasons for neck swelling: 1, if there is trauma, it may be a cervical fracture, soft tissue injury in the neck or hematoma, etc. You can understand whether there is obvious damage to the bones through cervical spine X-ray or CT examination, and if it is soft tissue injury swelling, local injury within 24 hours promptly ice to reduce swelling. If it is a cervical fracture swelling, timely cervical brace should be fixed and braked; 2. It may be caused by cellulitis, lymphadenitis, etc. This condition generally has local redness and swelling, high skin temperature, etc. It can be judged by blood routine, ultrasound and other examinations, and anti-inflammatory treatment such as levofloxacin can be chosen for treatment; 3. Neck organs, such as thyroid cyst, thyroid cancer, thyroglossal cyst, lymphoma, etc., may also The neck may be enlarged, which can be initially determined by ultrasound examination and combined with puncture biopsy if necessary.