Generalized anxiety disorder is characterized by the following aspects: 1. Patients have persistent generalized, tension and anxiety without a clear purpose or actual content. This anxious tension and anxiety is not an actual threat that exists objectively, but an excessive concern and anxiety, such as children going out worrying about being bullied, and the elderly going out worrying about falling or not being able to find their homes; 2. Patients have a series of symptoms that appear as a dysfunction of the vegetative nerves, such as palpitations, chest tightness, difficulty breathing, stomach pain, nausea, vomiting, abdominal pain, diarrhea, frequent urination, and urgent urination; 3. Motor restlessness symptoms, patients can show fidgeting, inability to sit still, rubbing hands and feet, whole body muscle jumping, muscle tension pain and muscle tremor of lips, tongue, fingers, etc.