Abstract： Objective： To observe the clinical value of thumbtack needle on insomnia after breast tumor resection. Methods：A total of 100 patients with insomnia after breast tumor resection were randomly divided into the control group and the observation group according to the principle of 1∶1，with 50 cases in each group. The control group was treated with routine nursing，and the observation group was treated with thumbtack needle. The clinical effect and scores of Pittsburgh Sleep Quality Index(PSQI) before and after treatment were compared between the two groups. Results：The total effective rate was 78.00% in the observation group，higher than that of 46.00% in the control group(P＜0.05). After treatment，the PSQI scores of all dimensions and the total scores in both groups were decreased when compared with those before treatment(P＜0.05). When compared with those in the control group after treatment，the PSQI scores of all dimensions and the total scores were lower in the observation group after treatment(P＜0.05). Conclusion：Thumbtack needle can effectively improve the sleep quality of patients with insomnia after breast tumor resection，whose operation is simple and safe.