Meanwhile, we used binary logistic regression analysis to analyze the correlation between sex, age, BMI, fracture, and preoperative albumin level, the result showed that the risk of postoperative complications increased by 6.9% with every 1 year old is increasing (age >60), and the risk of postoperative complications in patients with preoperative hypoalbuminemia (serum albumin < 35g/L) was 1.89 times higher than that in patients with normal preoperative albumin (preoperative serum albumin ≥ 35g/L). The gene discussed is ALB; the disease is Hypoalbuminemia.