Universal CAR-T Cells in Patients with Refractory Autoimmune Diseases of the Nervous System.

Inclusion Criteria: * Aged 18-75 years (for MS patients, 18-55 years); both genders eligible. * Subjects with refractory neurological autoimmune diseases who have failed standard treatment or lack effective treatment, Including neuromyelitis optica spectrum disorders(NMOSD), generalized myasthenia gravis(gMG), chronic inflammatory demyelinating Polyradiculoneuropathy(CIDP) and multiple sclerosis(MS). * Anticipated survival of ≥ 12 weeks as judged by the researcher. * Agrees to use double barrier methods, condoms, oral or injectable contraceptives, or intrauterine devices during the study period and for one year after taking the study medication. * Provides written informed consent. Exclusion Criteria: * History of solid organ transplantation. * Malignant tumor within the last two years. * Positive for Hepatitis B surface antigen (HBsAg) or Hepatitis B core antibody (HBcAb), with peripheral blood Hepatitis B virus (HBV) DNA detected as positive; positive for Hepatitis C virus antibodies, with peripheral blood Hepatitis C virus RNA detected as positive; positive for Human Immunodeficiency Virus (HIV) antibodies; positive for Cytomegalovirus (CMV) DNA; positive for syphilis. * Primary immunodeficiency (congenital or acquired). * Severe cardiac disease. * History of psychiatric disorders or history of psychotropic drug abuse, with no history of withdrawal. * Allergic constitution or a history of severe allergies. * Pregnant or breastfeeding women.