Thromboelastography is not mandatory for general pregnant women in late pregnancy. Pregnant women with high risk factors for blood clots may choose to undergo a thromboelastography to further clarify their coagulation status. Thromboelastography is a test that evaluates a woman’s coagulation function and the probability of thrombosis. Pregnant women in late pregnancy are physiologically in a state of hypercoagulability, so if there are no risk factors for thrombosis, they can have their coagulation function checked routinely and do not need to undergo thromboelastography. If there are high risk factors for thrombosis, such as a history of multiple unexplained arrests, abnormally high levels of D-D polymers in the coagulation function, and abnormally high platelet aggregation rate, further thromboelastography can be performed to clarify the thrombotic risk of the pregnant woman.