Encapsulated breast cancer is a kind of breast cancer, and the lumps formed in the early stage are large. The cause of the disease is still unclear, but there is a certain family heredity, and it may also be related to emotions, hormone secretion and other factors. 1. Family heredity: research shows that if there is a family history of breast cancer, especially immediate family members, the chance of having parcel breast cancer is greater than that of those without family history. 2. Emotions: if patients have long-term mental stress, it will cause emotional instability, leading to frequent anger, which may easily cause parcel breast cancer. 3. Hormone secretion: when the patient’s body has excessive hormone secretion, such as excessive secretion of estrogen and progesterone, it may cause the occurrence of parcel breast cancer. When the patient has encapsulated breast cancer, it is recommended to seek medical treatment in time, diagnosed by professional doctors and given reasonable treatment to avoid the disease from deteriorating.