超氧化物歧化酶（SOD）广泛存在于能利用氧的细胞内，它能催化超氧阴离子的歧化反应，从而有抗癌和抗细胞损伤等作用。有关实体肿瘤病人的SOD研究较多，而对于血液系统的恶性肿瘤白血病与SOD的关系，国内报道尚较少，我们测定了51例白血病病人红细胞SOD活性，现将结果报道如下 Superoxide dismutase (SOD) is widely found in cells that can use oxygen, and it can catalyze the disproportionation of superoxide anion, which has anti-cancer and anti-cell damage effects. There are more SOD studies on patients with solid tumors, and there are few domestic reports on the relationship between malignant leukemia and SOD in the hematological system. We have measured the activity of red blood cell SOD in 51 leukemia patients. The results are reported below.