脑脊液常规检查对诊断化脓性脑膜炎具有重要意义。脑脊液呈典型改变的化脓性脑膜炎诊断并不困难，但部分患儿由于多种原因脑脊液可呈非典型改变，因此易造成误诊，延误治疗，产生后遗症。我科1986年1月～1993年11月8年内共收治化脓性脑膜炎138例，其中39例（35．4％）脑脊液呈 Cerebrospinal fluid routine examination of the diagnosis of purulent meningitis is of great significance. Typical changes in cerebrospinal fluid purulent meningitis diagnosis is not difficult, but some children due to a variety of reasons cerebrospinal fluid can be atypical changes, it is easy to cause misdiagnosis, delay treatment, resulting in sequelae. 138 cases of purulent meningitis were treated in our department from January 1986 to November 1993, of which 39 cases (35.4%) had cerebrospinal fluid