Objective. Based on a retrospective case-control study, this study aims to explore the effect of holistic nursing in operating room based on PDCA (plan, do, check, and action) process and evidence-based nursing (EBN) in a ear, nose, and throat operating room. Methods. About 200 patients who underwent otorhinolaryngology surgery in our hospital from January 2019 to September 2021 were enrolled. According to the difference of nursing mode, patients were assigned into a control group and study group; holistic nursing in operating room was included in control group, and holistic nursing in the operating room based on PDCA and EBN was included in study group. Nursing satisfaction, hypothermia, chills, restlessness, related indexes of operating room, nursing quality scores of operating room, and individual quality control scores were compared. Results. First of all, we compared the nursing satisfaction, the study group was very satisfied in 69 cases, satisfactory in 30 cases, general in 1 case, the satisfaction rate was 100.00%, while in the control group, 46 cases were very satisfied, 34 cases were satisfied, 13 cases were general, and 7 cases were dissatisfied, the satisfaction rate was 93.00%. The nursing satisfaction of the study group was higher compared to the control group (
P
<
0.05
). Second, we compared the incidence of hypothermia, chills and restlessness. The incidence of hypothermia, chills, and restlessness in the study group was lower compared to the control group (
P
<
0.05
). The time of tracheal tube extubation, PACU stay time, postoperative hospitalization time, hospitalization cost, and operation time in the study group was significantly lower compared to the control group (
P
<
0.05
). In terms of the scores of nursing quality in the operating room, the instruments and equipment management, equipment preparation, nurses’ cooperation skills, disinfection and isolation quality, and total score in the study group were higher compared to the control group (
P
<
0.05
). Finally, we compared the scores of individual quality control examination. The scores of ward management, rescue, therapeutic articles, drug management, first-level nursing, nursing documents, and head nurse management in the study group were higher compared to the control group (
P
<
0.05
). Conclusion. Incorporating the concepts of PDCA and EBN into the overall care of the operating theatre is effective for patients in the ENT operating theatre. Our results show that this care can be effective in improving patients’ surgical indicators, reducing the incidence of postoperative infections, shortening postoperative resuscitation and length of stay, reducing hospital costs, and promoting surgical patient satisfaction. While further multicenter studies are necessary, this series of nursing interventions remains worthy of replication in the clinical setting.