If a pregnant woman finds fluid around the gestational sac during ultrasound examination, there is no need to worry too much, as it is mostly due to the accumulation of blood in the uterine cavity and the collection of fluid next to the gestational sac. Generally, a small amount of fluid is formed in a circular image <3cm in diameter, which has little effect on the pregnant woman and the fetus, while a fluid of more than 4cm is rare and usually does not affect the fetus or the pregnant woman herself too much. If a pregnant woman is not bleeding vaginally, the size of the fluid formation can be observed regularly with ultrasound. If a pregnant woman has vaginal bleeding, she should be admitted to the hospital immediately for observation and fetal preservation treatment. At present, there is no particularly good treatment for the effusion next to the gestational sac, and such cases are mostly observed and progesterone levels are tested during pregnancy, and when progesterone levels are too low, medications such as progesterone are applied in a timely manner under the guidance of a doctor to raise progesterone levels. In daily life, pay attention to rest, do not over-stress, pay attention to diet, avoid sexual intercourse, and perform pregnancy tests regularly.