The symptoms of lithium poisoning include the following: 1. Patients will experience gastrointestinal irritation, nausea, vomiting, abdominal pain, diarrhea and a series of other symptoms, and patients will also experience weakness, poor appetite, etc. 2. After lithium poisoning, patients will experience headache, dizziness, and weakness of the limbs, muscle tremors and other symptoms, and individual patients will also experience muscle spasms, which can lead to muscle strains in serious cases. 3. After lithium poisoning, individual patients may also experience coma and shock, which can seriously endanger their lives. The treatment after lithium poisoning is based on the infusion to promote the discharge of lithium ions, there is no clear special drug after lithium poisoning, only through supportive therapy for treatment. According to some symptoms of gastrointestinal tract, we can use gastrointestinal regulating drugs, such as omeprazole, 654-2, vitamin B6 and other drugs. For muscle tremors and muscle spasms, treatment can be done with Valium, etc. If the patient is in a serious situation such as coma and shock, treatment such as blood perfusion should be taken to ensure the patient’s life.