Many studies in China and abroad now agree that noise has more serious effects on the fetus than environmental pollution, and that noise can affect the child’s weight and even stimulate the fetal brain development causing irreversible damage. In the past, people have no way to directly observe whether environmental noise can be transmitted into the body to stimulate the fetus because of the limitations of counting equipment conditions. Therefore, it is generally believed that noise is stimulated by the mother-to-be, causing disorders in her nervous system and internal organ system, and then affecting the fetus through a series of reactions of the mother-to-be. Therefore, when it comes to noise protection, measures such as wearing earplugs for the mother-to-be are taken, and everyone puts the attention on the mother, but the direct protection of the fetus itself is not enough. In the case of electron microscopic observation of ultra-thin sections, it was found that the main effect of noise on the nervous system is to act on the mitochondria of the nerve cells in the auditory center of the cerebral cortex, and make them significantly larger and the endoplasmic reticulum significantly dilated so as to form larger vacuoles, which in turn causes disorders of the human nervous system. It has been found that the blood pressure of people with hearing impairment caused by noise stimulation is higher than that of people with normal hearing, so it is believed that noise has a chronic pressure-raising effect. At the same time, it was also found that noise caused degeneration and degeneration of hair cells and nerve cells in the inner ear, resulting in a continuous decline in hearing until deafness was caused. It was then discovered that ultrasound could penetrate into the uterine cavity and that it was necessary to protect not only the mother-to-be but also the fetus in the noise. Among the effects of the environment on the fetus, it is important to note not only the noise of machines but also the noise from road vehicles. It is also important to pay extra attention to loud pop music and some popular songs, because many experiments have confirmed that loud music and songs are the same as the fetal heart rate accelerated by fetal movement caused by machine noise. So mothers-to-be who like rock music or disco should pay attention and restrain themselves from listening to that music for the safety of their fetus. In order for fetal education to be carried out properly, and for the purpose of developing the fetal brain to be finally achieved, environmental noise must be given strict attention and resolutely prevented. Once polluted by noise, in addition to the protection of the mother-to-be also pay attention to the protection of the fetus.