After chest fluoroscopy for men, it is recommended to wait 3 months before proceeding with the preparation for pregnancy. Chest fluoroscopy is an examination of body organs using X-rays, mainly for the examination of heart and lung tissue. During the fluoroscopy, there is exposure to radiation, which can cause damage to mature and partially mature sperm, and during the examination, some of the sperm may be deformed, which can affect the quality of semen and may lead to abnormal development of the baby after conception. Therefore, after the examination, it is necessary to wait for all the damaged sperm to be metabolized before proceeding with the preparation for pregnancy. The normal sperm metabolism time is about 3 months, so it is safer to wait for 3 months after the examination before preparing for pregnancy. If the individual is psychologically stressed, it is safer to consider a further interval of 1-2 months. Before the test, the patient can tell the examining doctor that if the test is not particularly needed, it can be stopped temporarily or changed to another test to reduce the damage to the sperm.