噬血细胞结合征（HS），是一组从骨髓细胞学角度提出的综合征。它可由感染、肿瘤及其它疾病诱发，其显著特征是在骨髓涂片中出现体积较大噬血细胞，被吞噬物为完整的白细胞、成熟或有核红细胞、血小板等[1]．我们遇到2例，现报告如下。患者女，20岁，学生。7天前无明显诱因的发 Hemophagocytic Binding Syndrome (HS) is a group of syndromes that are presented from the perspective of myeloid cytology. It can be caused by infection, tumor and other diseases. Its remarkable feature is the appearance of larger volume of hemophagocytic cells in bone marrow smears, complete phagocytosis of leucocytes, mature or nucleated red blood cells, platelets, etc. [1]. We encountered two cases, are as follows. Female patient, 20 years old, student. 7 days ago no obvious incentive to hair