本文对45例急性白血病患者的形态学、细胞化学和免疫学表型进行了观察和分析,其中19例诊断为急性非淋巴细胞白血病。19例急非淋患者中,7例患者的原始细胞过氧化物酶染色阴性或低百分率,但经细胞化学染色和/或免疫学标记证实为髓系起源。文中对过氧化物酶阴性或低百分率急非淋的诊断、临床意义及原因进行了讨论。 In this paper, 45 cases of acute leukemia patients morphological, cytochemical and immunological phenotypes were observed and analyzed, of which 19 cases were diagnosed as acute non-lymphocytic leukemia. Of 19 acute non-lymphoid patients, 7 had either a negative or a low percentage of peroxidase-stained blasts, but were identified as myeloid origin by cytochemical staining and / or immunological labeling. In this paper, the negative or low percentage of peroxidase non-fecal diagnosis, clinical significance and reasons are discussed.