[Objectives] To analyze the application effect of paraffin oil in mixed hemorrhoids surgery. [Methods] We retrospectively reviewed the clinical data of 267 mixed hemorrhoids patients treated at Ruikang Hospital Affiliated to Guangxi University of Chinese Medicine from January 2021 to December 2022. Patients were categorized based on their perioperative laxative use into two groups: the paraffin oil group (n=125) where paraffin oil was used, and the non-paraffin oil group (n=142) where physiological saline served as a control. We compared various metrics between the two groups, including: (1) Changes in serum electrolyte levels (potassium, sodium, calcium, magnesium) from the day before surgery to the 5th postoperative day; (2) Duration of hospitalization and associated costs; (3) The proportion of patients requiring additional analgesic drugs or the setup of analgesic infusion pumps; (4) The time of first defecation after surgery and the frequency of defecation on the first postoperative day. Additionally, we assessed the variations in hemoglobin loss, the intensity of pain at the incision site on the first day after surgery and the fin oil groups), This group also reported less pain during the first post-surgery bowel movement and a quicker first postoperative defecation, with both findings being statistically significant (P0.05). In the non-paraffin oil group, there was no significant difference in hemoglobin loss and postoperative incision pain VAS score on the first day between different surgical techniques (P>0.05), but the VAS score on the first bowel movement post-surgery in TST group was lower than that in Milligan-Morgan procedure group (P<0.05). [Conclusion] Paraffin oil demonstrates substantial benefits in treating mixed hemorrhoids. It not only hastens the first postoperative bowel movement, reduces hospital costs, and lessens the need for additional analgesics but also mitigates defecation pain (especially with Milligan-Morgan procedure) and bleeding (especially with TST) without inducing electrolyte disturbances in patients.