The fact that there is no bleeding at all stages of pregnancy does not mean that the fetus and the state of pregnancy are necessarily normal, and regular pregnancy tests are needed to observe the state. In the early, middle and late stages of pregnancy, even if there is no bleeding, but also can not be based on this judgment is in a normal state, for example, in the early stages of pregnancy, if there is an ectopic pregnancy in the fallopian tubes, due to the early stage of the gestational sac is small, did not occur in the fallopian tube rupture bleeding, but it is also anomalous, only through whether the bleeding to judge can not, but also need to be supplemented with ultrasound and other examinations. The specificity of pregnancy without bleeding is low, to regular regular pregnancy checkups, improve ultrasound, fetal monitoring and other related auxiliary examinations to observe the state of the fetus and the mother, which is an important measure to protect the health and safety of the fetus and mother.