The positive symptoms of schizophrenia mainly include hallucinations, delusions, thought disorders, and behavioral disorders, among which hallucinations are mostly hallucinations of hearing, but can also be manifested as hallucinations of vision, smell, taste, touch, and visceral hallucinations. The behavioral disorders are mainly manifested as bizarre behaviors, alternating nervous excitement and nervous rigidity. Negative symptoms include poor speech, reduced verbal communication, almost no spontaneous speech, emotional indifference, lack of affection, social withdrawal, not actively participating in social activities, passive behavior, isolation, non-community, reduced will, no plans for the future, no pursuit, and even lazy personal hygiene.