Anxiety and depression are two completely different mental illnesses. These two disorders are convertible to each other. Chronic anxiety may be accompanied by depression, and chronic depression may be accompanied by anxiety. The two will also affect each other, depression aggravated, anxiety, the same will be aggravated, anxiety aggravated depression, the same will be aggravated. 1, depression depression, also known as depressive disorder, with significant and persistent depressed state of mind as the main clinical features, is the main type of mood disorders. Clinically visible depressed state of mind is not commensurate with its situation, emotional depression can be from sullen to grief, low self-esteem and depression, or even pessimism, there can be suicide attempts or behavior; and even the occurrence of wooden stiffness. In some cases, there is marked anxiety and motor agitation; in severe cases, psychotic symptoms such as hallucinations and delusions may occur. Each attack lasts for at least 2 weeks, or even years, and most cases have a tendency to recur, and most of the attacks can be relieved, and some of them may have residual symptoms or become chronic. 2, anxiety disorders Anxiety disorders, also known as anxiety neurosis, is one of the most common of the major categories of neurological disorders, mainly characterized by the experience of anxiety. It can be categorized into chronic anxiety, i.e. generalized anxiety and acute anxiety, i.e. panic attacks. The main manifestations are: nervous worry without a clear objective object, fidgeting, and symptoms of vegetative dysfunction, such as palpitations, hand tremors, sweating, frequent urination, and motor restlessness. Note the distinction between normal anxiety, such as the severity of anxiety and the objective facts or the situation clearly does not match, or the duration is too long, then it may be pathological anxiety.