Objective: To evaluate the effectiveness of Bian stone warming and ironing combined with aromatherapy on postpartum urinary retention among lying-in women with painless delivery, so as to provide the reference for preventing postpartum urinary retention after painless delivery. Methods: Lying-in women who underwent painless delivery in the Hangzhou Women' s Hospital were randomly assigned into the intervention and control group. Participants in the intervention group were given Bian stone warming and ironing combined with essential oil aromatherapy, while participants in the control group were given routine nursing care. The first postpartum urination and urinary retention were recorded, nursing satisfaction was investigated using Newcastle Satisfaction with Nursing Scale, the quality of life was evaluated using The World Health Organization Quality of Life-BREF, and these indicators were compared between the two groups. Results: There were 92 participants in the intervention group, with a mean age of (26.51±1.31) years and mean gestational age of (38.11±0.55) weeks, and 86 participants in the control group, with a mean age of (26.61±1.24) years and mean gestational age of (38.28±0.72) weeks. There was no statistically significant difference in the general data between the two groups (P>0.05). The time of first urination in the intervention group was shorter than that in the control group [(2.91±1.02) h vs. (3.76±1.68) h], the first postpartum urine volume was more than that in the control group [(160.56±21.03) mL vs. (142.43±18.42) mL], the residual urine volume of the bladder after the first urination was less than that in the control group [(73.20±17.03) mL vs. (85.46±20.24) mL], the incidence of urinary retention was lower than that in the control group (3.26% vs. 10.47%), nursing satisfaction was higher than that in the control group, and the increase in scores of all dimensions of quality of life was greater than that in the control group, with statistically significant differences (all P<0.05). Conclusions Bian stone warming and ironing therapy combined with aromatherapy may effectively reduce the incidence of postpartum urinary retention, and improve nursing satisfaction and quality of life among lying-in women after painless delivery.