Early manifestations of lithium carbonate poisoning mainly include nausea, vomiting, diarrhea, coarse tremor, and in severe cases, patients can suffer from convulsions, coma, cardiac arrhythmia, and even death. Lithium carbonate is mainly used clinically for the treatment of mania or depressive states, but also for bipolar disorder. Lithium carbonate has a narrow therapeutic window, which means that its therapeutic dose and poisoning dose are relatively close to each other, so it is more prone to poisoning. Once lithium carbonate poisoning occurs, it is important to immediately stop taking the drug and actively seek resuscitation treatment in a regular hospital, often followed by lithium carbonate poisoning, which may require gastric lavage, emetic, and symptomatic, supportive treatment. In the process of clinical use of lithium carbonate, it is important to closely monitor and observe patients for adverse reactions or toxic reactions.