目的：探讨细针吸取细胞学检查乳腺肿块的准确性及临床应用价值。方法：采用10 ml 7号针头一次性注射器针吸乳腺肿块4 384例，其中1100例有病理组织学诊断对照。结果：细针吸取细胞学阳性确诊率92．26%，假阳性率0.27%；阴性确诊率99.19%。结论：细针吸取细胞学检查乳腺肿块准确性较高，10 ml 7号针头一次性注射器取材对组织损伤极小，一次取材成功率98.49%，具有较大的实用价值。 Objective: To investigate the accuracy and clinical value of fine needle aspiration cytology for breast masses. Methods: A total of 4 384 cases of breast lumps were removed using a 10 ml 7-gauge disposable syringe needle, of which 1100 cases had histopathological diagnosis and control. RESULTS: The positive rate of 99.26% for positive needles and positive false positive rate was 0.27%. The rate of negative diagnosis was 99.19%. Conclusion: The accuracy of fine needle aspiration for cytological examination of breast masses is high, and 10 ml No. 7 needle disposable syringes have minimal tissue damage. The success rate of one-time sampling is 98.49%, which is of great practical value.