〔Abstract〕 Objective To investigate the effect of perioperative nutrition support based on enhanced recovery after surgery(ERAS) on nutritional status of elderly patients with hip replacement. Methods 70 elderly patients with hip replacement in our hospital from June 2019 to December 2019 were selected and randomly divided into control group (n =35, given routine nutritional intervention) and observation group (n = 35, given perioperative nutritional support based on eras concept) according to the random number table (ADL) and nutritional index levels of the two groups were compared. Results After the intervention, the ADL score of the two groups increased, and the observation group was significantly higther than the control group (P < 0.05); The nutritional indexes (body mass index (BMI), prealbumin (PALB), albumin (ALB)) of the observation group were significantly higher than those of the control group (P < 0.05). Conclusions The application of perioperative nutrition support with eras concept in elderly patients with hip replacement can improve their nutritional status and activities of daily living.