Abstract: Sarcopenia is a complicated clinical syndrome characterized by the loss of skeletal muscle mass and dysfunction.With the higher morbidity and mortality of cancer around the world，the occurrence and development of cancer-related sarcopenia are related to many factors.Its pathogenesis is complicated，and there is no effective standard treatment of cancer-related sarcopenia now.At present，the study of cancer-related sarcopenia is still in the early stage around the world.This paper reviewed the influencing factors，such as age，physical activity，nutrition status，and cancer therapy，to strengthen the assessment and screening of cancer-related sarcopenia，and provide objective basis for its prevention strategies in the future.?

Key words: Muscular diseases, Neoplasms, Sarcopenia, Root cause analysis, Review

摘要： 肌肉减少症是以骨骼肌质量减少及其功能减退为主要特征的复杂综合征。伴随世界范围内肿瘤高发病率以及高病死率，肿瘤相关性肌肉减少症的发生及发展与多种因素有关，发病机制比较复杂，且尚无有效的标准治疗措施。目前对肿瘤相关性肌肉减少症的研究仍处于初期探索阶段，本文通过对肿瘤相关性肌肉减少症发生、发展影响因素（如：年龄、体力活动、营养状况、肿瘤治疗等）进行综述，旨在加强对肿瘤相关性肌肉减少症的评估及筛查，为后续研究建立有针对性的预防策略提供依据。

关键词: 肌疾病, 肿瘤, 肌肉减少症, 影响因素, 综述