报告700例轻度脑功能障碍(MBD)。估计患病率约2～3％。男多于女,以5～8岁居多。20.7％有脑损伤史,13.6％有家族史。临床以注意力不集中、小动作增多、智力正常下有学习困难为主要症状。神经系统体征并不多见。脑电图及脑诱发电位异常多见于脑损伤史组,而VMA改变则多见于一般组。疗效以利太灵最佳。认为本病是多种病因所致的一种脑功能失调症状群。 700 cases of mild brain dysfunction (MBD) were reported. The estimated prevalence is about 2 to 3%. More men than women, mostly 5 to 8 years old. 20.7% had a history of brain injury, 13.6% had a family history. Clinical inattention, small movements increased, normal intelligence, learning difficulties as the main symptoms. Nervous system signs are rare. EEG and brain evoked potential abnormalities more common in the history of brain injury group, and VMA changes are more common in the general group. Efficacy of the best to be too talented. This disease is considered a variety of etiologies caused by a group of brain dysfunction symptoms.