Dr. Ren Liankun is performing the Wada test on a patient with epilepsy. The key to successful surgical treatment of patients with refractory epilepsy lies first and foremost in an adequate preoperative examination to locate the source of the epilepsy, i.e., to carefully map out the areas that produce seizures. Equally important is the need to avoid or minimize the loss of brain function that may result from surgical treatment. the Wada test, also known as the amytal test, is the international gold standard for preoperative lateralization of functional areas of language, especially memory function, providing irreplaceable information for predicting and avoiding postoperative memory and language dysfunction.γγIn our country, our team is the first to introduce the international standard Wada test with the application of propofol to provide maximum safety for the surgical treatment of epilepsy patients.