Abstract: Objective To explore the clinical value of CT-guided spring coil localization in thoracoscopic resection of subsolid nodules. 
Methods A retrospective analysis was conducted on 120 patients with solitary subsolid nodules (early stage lung cancer) in Shijiazhuang People′s Hospital from January 2022 to October 2024, who were divided into the research group (preoperative spring coil localization) and the control group (direct surgery) by using a random number table method. The success rate of localization, surgery-related indexes (duration of operation, intraoperative bleeding, number of staple cartridges used), postoperative recovery (retention time of chest tube, length of postoperative hospitalization) and changes in psychological status assessed by self-rating anxiety scale (SAS) and self-rating depression scale (SDS) were compared between the two groups. 
Results The success rate of localization in the research group was 100%, and only 1 patient experienced a small amount of pneumothorax; 1 patient in the control group required intraoperative CT localization. The research group was significantly superior to the control group in terms of duration of operation ［(94.200±25.170) min vs. (127.950±35.050) min, P＜0.05］, length of postoperative hospitalization ［(5.250±1.251) d vs. (7.000±1.522) d, P＜0.05］, and retention time of chest tube ［(2.900±0.641) d vs. (3.350±0.587) d, P＜0.05］. There was no significant difference between the two groups in terms of intraoperative bleeding, number of staple cartridges used and hospitalization expenses (P＞0.05). Psychological assessment showed that postoperative SAS and SDS scores of patients in the research group were significantly lower than those of the control group (P＜0.01). All surgeries were completed successfully, with no patient undergoing intermediate open chest and no residual spring coils or other serious complications. 
Conclusion CT-guided spring coil localization can improve the efficiency of surgery, shorten the postoperative recovery time, and improve the psychological state of patients, which is a safe and precise preoperative localization method worthy of clinical popularization. 

Key words: lung neoplasms, solitary pulmonary nodule, laparoscopy