本文报道５１例常规脑电图正常的癫痫病人２４ｈ磁带记录脑电图监测结果。睡眠脑电图癫痫样波发放率为６９％，而其中发生在睡眠第Ⅰ、Ⅱ期者占总数的９１％，表明睡眠脑电图对于常规脑电图正常的癫痫病人癫痫样波的检出有重要意义。本文未能证实睡眠癫痫样波发生率与癫痫发作类型及发作频率有关。对于２４ｈ磁带监测脑电图的应用的局限性也作了简要评述。 This article reports 51 cases of normal EEG normal epilepsy patients 24h tape recording EEG monitoring results. Sleep EEG epileptiform wave release rate of 69%, of which occurred in the first and the second stage of sleep accounted for 91% of the total, indicating that sleep EEG for normal EEG normal epilepsy patients with epileptiform detection There’s important meaning. This article failed to demonstrate that the incidence of sleep-like epilepsy waves is related to the type and frequency of seizures. A brief review of the limitations of 24-hour tape monitoring of EEG applications was also made.