In today’s society, many people unfortunately suffer from mental illnesses such as anxiety disorders and depression in the face of pressure from all aspects of study, work and life. Although both anxiety disorders and depression are mental illnesses, they are actually very different from each other. The differences between anxiety and depression are divided into the following points: 1. Depression is often accompanied by anxiety symptoms, but depression is mainly depression, anxiety is often only an emotional reflection of depression, but also accompanied by other emotional reflections, such as compulsion, suspicion, fear, etc. In the clinic, the symptom scale can be used to test and distinguish the priority of symptoms. 2, anxiety disorder patients do not have suicidal thoughts, despite the fear, but not yet to die to escape; while depression patients often have suicidal thoughts or even suicidal behavior. 3, the main emotional expression of anxiety disorder is excessive worry about what may happen in the future and suffering as a result; depression has a more complex dominant emotional component, including self-blame, self-guilt, low self-esteem, autism, sensitivity, etc., in addition to the emotional reflection with anxiety characteristics. 4. The somatic symptoms of anxiety disorders and depression are different. The somatic symptoms of anxiety disorders are mainly related to the vegetative nerves, such as breathing, heartbeat, sweating, etc., while the somatic symptoms of depression patients have a certain solidity, such as “plum kernel gas”, pain in the two sides, heaviness around the body, loss of libido, etc. 5, anxiety disorders because of anxiety also appear to some things of avoidance, but not widespread interest and intention to decline; while depression is a wide range of withdrawal and intention to decline. 6, anxiety disorder patients are often in the distraction, panic and nervousness, fear of misfortune coming panic foreboding, and accompanied by dizziness, sweating, hot flashes, tremors, numbness in the hands and feet, gastrointestinal discomfort and other symptoms. Anxiety is different from fear. The threats and dangers felt by anxiety are unrealistic or not very clear. 7, anxiety disorders often coexist with depression, clinical statistics, more than 80% of depressed patients have anxiety symptoms. In clinical diagnosis, there is a “depression priority diagnosis” principle, that is, when there are symptoms of depression and anxiety symptoms, regardless of their anxiety symptoms, should be diagnosed as depression. This principle is the summary of many years of experience of psychiatrists and has become an international standard. 8. In terms of age of onset, the first onset of anxiety is generally over 35 years old and occurs mostly in the elderly; while depression occurs in all age groups; depressed patients show coldness to family and friends and lose interest in their previous hobbies, while anxious people remain normal; insomnia in depressed patients is characterized by early awakening, while anxious people are characterized by difficulty in falling asleep; depressed patients are depressed and reluctant to make contact with people. But not afraid of sudden interpersonal contact; while anxious people are afraid of sudden social contact, etc., and are afraid of going to public places; by and large, depression is inhibited downward; while anxious people are frightened upward; depressed mood is a very common emotional component that can occur in all people, and when people encounter mental stress, life frustration, painful situations, birth, old age, illness, death, natural or man-made disasters, etc., it is logical that they will produce Depressed mood. The close relationship between anxiety and depression Although the symptoms, presentation and course of anxiety and depression differ in many ways, the symptoms are often intertwined in a person. They are similar in etiology and are both related to psychosocial factors: there are differences in symptomatology, but they are both neuroses. (2) Similar pathogenetic basis. With the same personality traits, both do not have somatic organic lesions. Early detection and active treatment generally result in better outcomes. (3) Depression is often accompanied by anxiety, and in turn, most people with anxiety disorders have significant depression inside. Therefore, for adolescents, the two can be combined, commonly known as “anxiety-depression syndrome”. Medications for depression are also effective for anxiety disorders and vice versa. Only when there is a significant improvement in both symptoms can there be hope for a cure. However, it is important to distinguish as much as possible between primary and secondary symptoms in order to start the prevention and treatment process. Anxiety disorders are treated primarily for anxiety manifestations, and depression should be treated around depressive symptoms.