对２０ 例多发性骨髓瘤（ ＭＭ） 进行临床分析，研究其临床特点，本组平均发病年龄５５ 岁，以中老年人为主。贫血伴骨痛是其常见的临床表现，Ｘ线检查均出现不同程度的骨质改变，其中８ 例（４０ ％ ）伴病理性骨折，尿本—周氏蛋白阳性２ 例（１０ ％） ，与实验方法有关。确诊ＭＭ 后均应化疗。提示中老年人出现贫血、骨痛，应可疑ＭＭ，进行全面检查 Clinical analysis of 20 cases of multiple myeloma (MM) was conducted to study its clinical features. The average age of onset in this group was 55 years old, mainly in middle-aged and old people. Anemia with bone pain is a common clinical manifestation. X-ray examination showed varying degrees of bone changes, including 8 cases (40%) with pathological fractures, and urine-Chow protein positive in 2 cases (10%). The experimental method is relevant. Chemotherapy should be performed after diagnosis of MM. Prompt middle-aged and elderly people with anemia, bone pain, should be suspicious MM, a comprehensive inspection