Having bleeding symptoms all the time in early pregnancy is an abnormal performance. The reasons for this phenomenon: 1, abnormal embryonic development: chromosomal abnormalities, toxoplasma infection, rubella virus infection, EBV infection, x-ray damage, chemical drugs, may lead to abnormal embryonic development and bleeding. 2, insufficient progesterone levels: due to poor luteal function of the ovaries, resulting in insufficient levels of progesterone secreted by the corpus luteum, which can not maintain the baby’s growth and development needs, will also 3.Gravida: Gravida is a relatively common type of abnormal pregnancy, which usually results in continuous and recurrent abnormal bleeding in the vagina at about 6-8 weeks of pregnancy. 4.Abnormal bleeding caused by gynecological diseases, such as cervical erosion.