The study is being conducted to evaluate the efficacy, safety of camrelizumab in combination with nab-paclitaxel and famitinib in Patients with unresectable locally advanced or metastatic immunomodulatory triple negative breast Cancer..

Inclusion Criteria:

• ECOG Performance Status of 0-1
• Expected lifetime of not less than three months
• Metastatic or locally advanced, histologically documented TNBC (absence of HER2, ER, and PR expression)
• Cancer stage: recurrent or metastatic breast cancer; Local recurrence be confirmed by the researchers could not be radical resection.
• Adequate hematologic and end-organ function, laboratory test results.
• Measurable disease according to Response Evaluation Criteria in Solid Tumors v1.1 (RECIST v1.1)
• Patients had received no previous chemotherapy or targeted therapy for metastatic triple-negative breast cancer

Exclusion Criteria:

• Previous received anti-VEGFR small molecule tyrosine kinase inhibitors (e.g. famitinib, sorafenib, Sunitinib, regorafenib, etc.) for treatment of the patients .
• A history of bleeding, any serious bleeding events.
• Important blood vessels around tumors has been infringed and high risk of bleeding.
• Coagulant function abnormality
• artery/venous thromboembolism event
• History of autoimmune disease
• Positive test for human immunodeficiency virus
• Active hepatitis B or hepatitis C
• Uncontrolled pleural effusion and ascites
• Known central nervous system (CNS) disease.
• Long-term unhealing wound or incomplete healing of fracture
• urine protein ≥2+ and 24h urine protein quantitative > 1 g.
• Pregnancy or lactation.
• Thyroid dysfunction.
• Peripheral neuropathy grade ≥2.
• People with high blood pressure;
• A history of unstable angina;
• New diagnosis of angina pectoris.
• Myocardial infarction incident ;
• Arrhythmia for long-term use of anti-arrhythmic drugs and New York heart association class II or higher cardiac insufficiency