The results showed that the AUC of PNI was 0.642, the AUC of albumin was 0.632, and the AUC of lymphocyte cell was 0.585, which indicated that the diagnostic value of the above three indexes was in the middle range of the diagnostic ability for HF (AUC in the range of 0.5–0.7). This evidence concerns the gene ALB and hydrops fetalis.