Bleeding in the 30th day of pregnancy may be due to ectopic pregnancy, preeclampsia, hyperemesis gravidarum, etc. It can be treated by general therapy, medication (methotrexate), (progesterone) surgery, etc. 1. Ectopic pregnancy: When reproductive system diseases or injuries cause the fertilized egg to settle outside the uterine cavity, which leads to bleeding in the 30th day of pregnancy, it can be treated with drugs such as methotrexate, which can inhibit the proliferation of trophoblast cells, destroy the chorionic villi, and cause the embryonic tissue to be necrotic, detached and absorbed. 2. Pre-eclampsia: affected by maternal factors, fetal factors, etc., there will be bleeding, you can add appropriate nutrients, proper rest, if the patient’s corpus luteum function is insufficient, you can use progesterone vaginally, such as progesterone extended-release gel, etc., if the condition is serious, it is necessary to be treated by surgery, such as purging, curettage and so on. 3. Chylothorax: If the fertilized egg and the chromosome ratio of both parents are abnormal, it will cause bleeding, the patient has ovarian luteinized cysts, can be in the ultrasound or laparoscopic puncture and wash, the cysts can be naturally reset, if it is less than 12 weeks, it can be scraped through a purging operation, and greater than 12 weeks of gestation need to be carried out after one week for the second time to clear the uterus. It is recommended that pregnant women go to the regular hospital in time, under the guidance of the doctor, a detailed examination, according to the results of the examination, the implementation of targeted treatment.