Hospitalization for fetal preservation at 12 weeks of pregnancy will generally not affect the child, and fetal preservation is beneficial to the fetus. Some medications will be used during the 12-week hospitalization for fetal preservation. As long as the medication is used within the prescribed dosage, it will not affect the fetus under normal circumstances. In order to be on the safe side, if there is any abnormality during the 12th week of pregnancy, you need to be hospitalized for fetal preservation, and you must follow the doctor’s instructions and use the medication reasonably under the doctor’s guidance, which is safer. In the treatment of fetal preservation, you also need to pay attention to rest, not strenuous exercise, and at the same time to strengthen the nutrition, it is best to eat more fresh fruits, vegetables, and protein-rich foods, which can help to promote fetal development, and usually need to do a good job on a regular basis to check the maternity test.