Table 1 shows the baseline information. Compared with normal parturients, the levels of neutrophils, NLR, SII and AISI of parturients with PROM were significantly higher, with statistical significance (all p < 0.05). The indexes of lymphocytes, platelets, albumin, LMR, PLR, PNI and ALI in parturients with PROM were lower than those in normal parturients, and the differences were statistically significant (all p < 0.05). PROM was more likely to occur in multiple pregnancies, multiparous, people with hypertension, diabetes, smoking habits and drinking habits (all p < 0.05). Here, ALB is linked to hypertensive disorder.