Lithium carbonate is usually used in the application of antidepressants. If lithium carbonate poisoning is identified, it needs to be detoxified in a timely manner, and if it is not detoxified in a timely manner, certain sequelae symptoms will occur. Patients will first have neurological sequelae, including disorientation, personality changes, hyperemotion, mild personality disorders, depressive episodes or manic episodes. Next, there will be dizziness, nausea, vomiting, dysfunction of the pyramidal or extrapyramidal system, intermittent claudication, and even sequelae such as transient dizziness, sudden collapse, transient loss of consciousness, and in severe cases, short-term memory loss. In addition to the nervous system, there will be digestive system symptoms such as nausea, vomiting, acid reflux, heartburn, abdominal pain, diarrhea, and in severe cases, sequelae of liver and kidney insufficiency.