Abstract: Primary breast haemangiosarcoma is a rare neoplasm. Non-specific clinical sign and diversify of pathological appearance are the main causes for fault diagnosis and delayed treatment in breast haemangiosarcoma because it's difficult to distinguish with other breast tumors, such as benign haemangioma, breast carcinoma and cystosarcoma phyllodes, etc. It's very useful to improve diagnosis rate and prognosis of primary breast haemangiosarcoma by reviewing its prevalence, clinical characteristics and pathological features.