Hypotonia-paralytic dyskinesia: it involves the head, neck and lumbar region, such as the neck is too soft to lift the head, the lumbar region is too soft to straighten and project the abdomen, and the walking is too weak to step and lift the legs and feet to drag the ground. This is a clinical manifestation of tardive dyskinesia. Delayed movement disorder, also known as delayed hyperactivity disorder persistent movement disorder, induced by antipsychotic drugs, as a persistent stereotyped repetitive involuntary movements Crane (1968) first proposed, is the most serious and problematic extrapyramidal reactions caused by antipsychotic drug treatment occurs at a fairly high rate. So what are the diagnostic criteria for soft neck inability to raise the head? Here is a brief introduction. Diagnostic test criteria: 1. There must be a history of taking antipsychotic drugs. 2.Motor impairment occurs when the patient is taking the medication or within 3 months after stopping the medication. 3.Motor disorders are characterized by rhythmic, abnormal, stereotypically repetitive involuntary movements. Treatment of soft neck inability to raise the head is slightly more difficult, but the prognosis is good, and most patients have good remission after adjustment of antipsychotic medication and administration of pharmacological symptomatic treatment. Therefore, it is recommended that once patients find suspected symptoms, they should actively go to professional regular hospitals for systematic examination, and both doctors and patients’ family members should pay close attention to patients to strive for early detection, early examination, early diagnosis and early treatment, so as to reduce the side effects of drugs on patients on the basis of controlling their conditions.