Summary of case history Main complaint,　12 gestational weeks with a small amount of vaginal bleeding for 3 days. Current medical history: the patient was pregnant for 12 weeks and had a small amount of vaginal bleeding due to fatigue two days ago, so he went to the local hospital immediately. The B-ultrasound examination showed that the uterus was in the anterior position, with a three-dimensional diameter of 127 mm×83.4 mm×110 mm, fetal heart rate: 169 times / min, 77.7 mm can be seen between the placenta and the anterior wall of the uterus×35.7 mm×70.3 mm no echo, fine dot echo rolling can be seen inside, and 56.6 mm can be seen between the lower edge of placenta and the posterior wall of uterus×14 mm×38.9 mm without echo. The results suggest that a large amount of blood may accumulate in the uterine cavity at 12~13 weeks of gestation. She was treated with didroxyprogesterone tablets to protect the fetus and was instructed to closely observe the bleeding. The patient felt dull pain in the waist and abdomen after taking the medicine. At present, the patient has a small amount of bleeding in the vagina, dark color, dull pain in the waist and abdomen, fatigue and fatigue, sleeping well, and normal stool.,TCM diagnosis,　Restless fetal movement, deficiency of kidney qi, blood stasis syndrome,Western medicine diagnosis,　threatened abortion with intrauterine hematoma,Therapeutic methods,　HAN's Zishen decoction was added and subtracted. Ask the patient to pay close attention to vaginal bleeding, forbid sex, and do not overwork.,Clinical outcomes,　The ultrasonic examination showed that the blood accumulation in the uterine cavity disappeared. The patient recovered.