This is a multicenter, prospective, e, real-world cohort survey initiated by researchers to focus on the patterns of breast cancer management and prognosis of breast cancer in China, and to establish the multicenter, prospective breast cancer data platform. A total of 18 sites in Guangdong and Henan have cooperated to build a cooperative network unit. The sites will conduct prospective and standardized records concerning the clinical pathological features, treatment and prognosis of the early breast cancer patients who are treated in their own site each year, registering in the REDCap system.This real-world cohort study aims to provide a representative and reliable survey data of epidemiological characteristics, clinical treatment and prognosis of patients with early breast cancer in China and explore the establishment of a national multi-center breast cancer data platform model.

Inclusion Criteria:

• Patients who are hospitalized and treated in a collaborative network unit
• Agree to enroll in the study and sign the informed consent form
• Histological diagnosis of ductal carcinoma in situ or invasive breast cancer
• Accept the Surgery-based surgical treatment
• Willing to cooperate with follow-up work

Exclusion Criteria:

• Previously Excisional biopsy (including minimally invasive resection) of the patient's breast
• Previously received neoadjuvant chemotherapy
• Imaging or histological evidence of distant metastasis

Patients who had early stage breast cancer and completed breast surgery