Platelets of 80×10^9/L can be treated with CAR-T (Chimeric Antigen Receptor T Cell Immunotherapy). CAR-T is a new type of precision targeted therapy for the treatment of tumors, which has a good therapeutic effect in the treatment of tumors in the clinic. Platelets generally need to reach 80×10^9/L, and other indicators need to meet the conditions in order to accept the treatment, such as neutrophils must be 1.5×10^9/L, and at the same time, the heart, the kidneys, and the liver have normal function, and there is no infection and fever. Symptoms. CAR-T therapy offers new hope to cancer patients. However, this therapy also has a relatively large number of adverse reactions, and is prone to cytokine release syndrome, which is prone to high fever, pyrexia, nausea, and fatigue, as well as muscle pain, generalized edema, flushing, and low blood pressure. The treatment is very taxing on the patient’s body, and it is recommended that during the treatment period, the patient needs to be actively cared for under the guidance of a specialist.