Clinically, headache is not directly related to eating, and headache after meals may just be coincidental. The common causes of headache are mainly the following: First, hypertension, hypertension mostly has a family history of hypertension and appears in the middle-aged and elderly population with blood pressure higher than 140/90mmHg. Patients may have symptoms such as dizziness, panic, chest tightness and tightness in the back of the neck and shoulders in addition to headache, and it is recommended that patients have a low salt diet and visit the cardiology department if necessary. Secondly, cervical spondylosis, headache caused by cervical spondylosis is mostly located in the back of the neck, accompanied by dizziness, headache, discomfort in the back of the neck, soreness of the shoulders, numbness of the upper limbs and other symptoms, it is recommended that patients perform cervical spine CT or cervical magnetic resonance examination in order to clarify the cause. Third, acute cerebrovascular disease, mostly seen in elderly patients, is divided into cerebral hemorrhage and cerebral infarction. Patients have an acute onset, often accompanied by weakness of the limbs, sensory disorders, choking and coughing, swallowing difficulties and other symptoms, and it is recommended that patients go to the neurology department for consultation.