Pre-excitation syndrome does not affect pregnancy. Pre-excitation syndrome itself is not scary, but the fear of serious arrhythmias, the burden on the heart is increasing after pregnancy, and the treatment of rapid arrhythmias is more difficult. Therefore, it is better to go to the hospital for detailed electrocardiogram examination before pregnancy to rule out the presence of preexcitation syndrome, but if you get it after pregnancy, you are not afraid, and radiofrequency ablation under zero radiation is also safe. If you are pregnant or not, you can come to the cardiology department of the hospital to ask about the disease and solve the problem without any radiation, and you can also solve the problem before you get pregnant.