1, hematological examination: including blood routine, blood sugar, electrolytes, blood calcium and other aspects of the examination, can help find the cause of the disease. Hematological examination is also used for the detection of adverse drug reactions, commonly used monitoring indicators include blood routine and liver and kidney function, etc. 2, urine examination: including urine routine and screening of genetic metabolic diseases, such as suspected phenylketonuria, urine iron trichloride test should be performed. 3, cerebrospinal fluid examination: mainly to exclude intracranial infections and other diseases. In addition to routine, biochemical, bacterial culture smear, the etiological examination of mycoplasma, toxoplasma, cytomegalovirus, herpes simplex virus, cysticercosis, etc. and the cytological examination of abnormal white blood cells should be performed. 4, genetic examination: Although a part of epilepsy is found to be genetically related, especially certain specific types of epilepsy, the current stage of medical development does not allow for the routine diagnosis of epilepsy by means of genetics. Genetic testing to predict the risk of epilepsy and to guide treatment through genetic findings are being further explored. 5. Other tests: For clinically suspected etiologies, other specific tests corresponding to clinical needs or realistic conditions can be performed. For example, in cases where poisoning is suspected to cause seizures, toxic screening can be performed, and in cases where metabolic disorders are suspected, relevant tests can be performed. Lumbar puncture cerebrospinal fluid examination and genetic testing are not routine tests for epilepsy.