Hearing a heartbeat in the ear after pregnancy, clinically it generally refers to pulsatile tinnitus, pulsatile tinnitus it is a kind of vascular tinnitus, clinically its causes are mainly the following: the first is that after pregnancy, due to the increase in the systemic blood volume, the systemic blood flow speed is accelerated, which may lead to hemodynamic changes and the emergence of pulsatile tinnitus, generally this situation is very common, and is also very common This is generally a very common phenomenon. The second reason is that some pregnant women may have hyperthyroidism after pregnancy, which may lead to hemodynamic changes, and some pregnant women with anemia or hypertension during pregnancy may also have hemodynamic changes. In this case, it is recommended to improve the relevant internal medicine examination and give symptomatic treatment. In the third case, some pregnant women may have abnormalities in the vascular anatomy of the body, such as arteriovenous fistula, jugular vein bullae, bulbar body tumor, and other vascular malformations, which may lead to tinnitus.