The follicle shape should be round or oval under normal circumstances. If the follicle shape is found to be flat during ultrasound examination, there are several reasons for this: 1. The follicles will be able to ovulate normally after maturity, so it won’t affect pregnancy. 2. If the follicles are found to be flat during ultrasound or color ultrasound, it may be because the follicles themselves are stunted, resulting in flat follicles. The follicles may not be able to mature and ovulate, so they may cause infertility in women. Even if the follicles are abnormally developed, even if there are eggs discharged and the eggs and sperm unite to form a fertilized egg, there is a chance that the embryo will develop abnormally.