Menstrual blood clots are particularly large like meat, may be blood mixed with endometrium containing shedding caused by the endometrium, may be a normal phenomenon, may also be endometrial hyperplasia, endometrial polyps and other diseases caused by. 1. Normal phenomenon: normal menstruation is to discharge the uterine lining and blood, the appearance of meat-like tissue may be a normal phenomenon, as long as the amount of menstruation, menstruation time can be normal. 2. Endometrial hyperplasia: The causes of this disease include polycystic ovary syndrome, oral contraceptive pills, and family history of tumors. In the early stage, there are no symptoms. With further development of the disease, patients will have symptoms such as increased menstrual blood volume and long bleeding time. Due to the excessive amount of blood, if it is not discharged in time, clots as big as meat may appear. 3. Endometrial polyps: The cause of this disease is not yet clear, and studies have shown that it may be related to abnormally high estrogen levels, chronic inflammatory stimulation, cervical infection and other reasons. Because the patient has excessive menstruation, it is easy to occur menstrual blood clots especially large like meat, and there will also be an increase in leukorrhea. As there are many reasons why menstrual blood clots are unusually large like meat, it is necessary to go to the hospital for a series of relevant examinations to clarify the cause of the disease.