Sodium valproate is a commonly used drug for the treatment of epilepsy. Epilepsy is a chronic disease that requires at least 3 years of seizure-free and normal EEG review before the drug can be gradually reduced or discontinued under the guidance of a physician, depending on the patient’s condition. It is a broad-spectrum antiepileptic drug and is the drug of choice for primary grand mal seizures and atonic petit mal seizures. If the patient has been seizure-free after regular use of antiepileptic drugs, he can continue to take the drug for 2.5-3 years, and if there are no seizures within 3 years, the dosage can be reduced under the guidance of the doctor. If there are still no seizures after six months of dose reduction, the EEG needs to be rechecked, and if the results are normal, the medication can be stopped. If there is a seizure during this period, the duration of medication should be recalculated. So the total duration of medication is at least 3-3.5 years. In addition, patients need to be aware that alcohol consumption, light stimulation, lack of sleep, and patting the patient’s head can cause seizures and need to be absolutely prohibited.