Polycystic ovary syndrome IVF pregnancy six weeks have fetal buds and fetal heart still stop, may be poor follicle quality, luteal hypoplasia, endocrine abnormality, sperm quality abnormality and other reasons. 1. Poor follicular quality: patients with polycystic ovary syndrome usually have poor follicular quality, and with poor embryo quality after successful IVF, there may be fetal arrest even after six weeks of pregnancy with fetal buds and fetal heart. 2. Luteal hypoplasia: patients with polycystic ovary syndrome usually have luteal hypoplasia, and the progesterone secretion in the body is insufficient to maintain a normal pregnancy, which may lead to fetal arrest even after six weeks of pregnancy with fetal buds and a fetal heartbeat. 3. Endocrine abnormalities: patients with polycystic ovary syndrome are usually accompanied by other endocrine abnormalities, such as hyperinsulinemia, hyperandrogenemia, etc., which may also induce fetal arrest. 4. Abnormal sperm quality: Men with abnormal sperm quality, such as sperm deformities, azoospermia, etc., may also experience fetal arrest if they have fetal buds and a fetal heart after six weeks of pregnancy in patients with polycystic ovary syndrome. Polycystic ovary syndrome patients with IVF has more reasons for fetal arrest, it is recommended to go to the hospital in time to find out the cause of the disease.