The examinations that need to be done after blood transfusion for postpartum hemorrhage include blood cell analysis, coagulation function examination, liver and kidney electrolyte examination, ultrasonography, and cranial magnetic resonance examination. 1. Blood cell analysis: after blood transfusion for postpartum hemorrhage, it is necessary to find out whether the blood cells have rebounded, and at the same time, it is necessary to pay attention to hemoglobin and so on. 2. Coagulation function: due to maternal hemorrhage, a large number of platelets and coagulation factors are consumed, which may lead to persistent hemorrhage if they are not replenished by blood transfusion in time, so it is necessary to review the coagulation function after blood transfusion. 3. Liver, kidney and electrolytes: through the examination of liver, kidney and electrolyte changes in the body, to determine whether there is severe acute liver and kidney failure, electrolyte and acid-base balance disorders. 4. Ultrasonography: It mainly evaluates the residual situation in the uterine cavity, and then determines whether there is a risk of continued bleeding. It can also help to identify the cause of postpartum hemorrhage. 5. Cranial magnetic resonance: If the mother has postpartum hemorrhage, it is easy to affect the function of the pituitary gland to a certain extent, so it is necessary to assess the status of the pituitary gland through cranial magnetic resonance examination. Therefore, there are many tests that need to be done after blood transfusion for postpartum hemorrhage, and the specific tests need to be selected according to the individual situation under the guidance of the doctor.