Objective To evaluate the feasibility of immediate breast reconstruction with silicone prosthesis for breast tumor. Methods The clinical data of the 42 patients with breast tumor who had undergone breast reconstruction with silicone prosthesis from January 2012 to June 2017 were collected retrospectively. The postoperative complications and cosmetic results were analyzed. Results All patients underwent operation successfully. The surgical time was 230–435 min (mean of 325 min), the intraoperative blood loss was 100–160 mL (mean of 130 mL), and the hospitalization time was 18–33 d (mean of 24 d). The cosmetic results was excellent in 26 patients, good in 8 patients, bad in 8 patients, and fine rate was 81.0% (34/42). Rate of patients’ overall satisfaction with breast reconstruction was 73.8% (31/42) and rate of aesthetic satisfaction was 78.6% (33/42). After operation, seroma occurred in 2 patients, and the ischemic necrosis in nipple and areola occurred in 3 patients. All the patients were followed-up for 4–70 months, and the median follow-up time was 37 months. During the follow-up period, no patient had metastasis or recurrence. Six patients received radiotherapy, among them 2 patients appeared Ⅱ-grade capsular contracture. Conclusion The breast reconstruction with silicone prosthesis is a simple, easy, and effective surgical procedure.