Benign familial neonatal convulsions (BFNC) is a rare idiopathic epilepsy syndrome, which is mainly manifested as febrile seizures during the neonatal period, and then disappears spontaneously within a few weeks or months. Its inheritance Dominant chromosome inheritance. The age of onset and disappearance of seizures is significantly different between patients within and outside the family. Although most BFNCs have a benign process, about 7% of patients still have language, cognitive and other neurological dysfunctions, and about 10% to 16% of patients will relapse to epilepsy in adolescence or adulthood. With individual development Imaging examination of the head of patients with obstacles can reveal abnormalities such as thinning of the corpus callosum, mild white matter atrophy and lateral ventricle enlargement. The study found that in patients with benign familial neonatal convulsions, there are pathogenic mutations in the potassium channel member genes KCNQ2 and KCNQ3.