目的  调查与分析常见恶性肿瘤患者的营养状况，探讨营养不良对患者临床结局的影响。方法  选取 2013 年 3 月 至 2016 年 4 月新入院恶性肿瘤患者176 例，入院48 小时内运用PG-SGA 对患者进行营养状况评估，记录患者在院期间感 染性并发症发生情况、住院时间、住院费用，随访患者无计划30 天内返院率及生存情况。结果  176 例患者中，入院总体 营养不良发生率为71.60%，营养不良组患者感染性并发症发生率为42.06%，较营养良好组（6.00%）更高；营养不良组较 营养良好组有更高住院费用及更长住院时间；营养不良组的无计划30 天返院率为9.52%，高于营养良好组（0）；营养不 良组生存期较营养良好组短，且PG-SGA 分级越差，生存时间越短。结论  住院的恶性肿瘤患者营养不良发生率高，营养 不良将会直接影响患者的临床结局，导致住院恶性肿瘤患者在院期间感染性并发症发生率升高、住院时间延长、住院费用 增加、无计划30天再入院率提高及生存期缩短，营养不良是影响患者无计划30天再入院率及生存期的独立危险因素之一。

Objective To investigated the common cancer patients' nutritional status, and to discuss the effect of malnutrition on the clinical outcome of patients. Methods 176 new admitted patients with malignant tumor were selected from March 2013 to April 2016. Patients' nutritional status was assessed by PG-SGA within 48 hours of admission, in the same time, the occurrence of infectious complications during the hospital, the hospital stay, the hospitalization expenses, non-planed 30 days re-admission and the death time or the survival time of the patients were recorded. Results In 176 patients, malnutrition incidence was 71.60%; The incidence of infectious complications in patients with malnutrition was 42.06%, which were higher than that in the patients with well nourished (6.00%). The malnutrition group had higher hospitalization expenses and longer hospital stay than the well nutrition group. The rate of non-planed 30 days re-admission in the patients with well-nourished (0) was significantly lower than those with malnutrition (9.52%). The poorer the nutritional status was, the shorter the survival time was. Conclusions The overall rate of malnutrition in common tumor patients were high. The malnutrition will directly affect the patient's clinical outcome, resulting in the higher incidence rate of infectious complications during the hospital, the longer hospital stay, the higher hospitalization expenses, incidence of the higher non-planed 30 days re-admission and the shorter survival time. Malnutrition is one of the independent risk factors that affect the planned 30-day hospitalization and survival.