There are geomagnetism, a large number of cosmic rays and solar magnetic storm radiation waves in nature, which will stimulate people's brains and organs. These magnetic wave radiation can promote biological growth, and there is a certain internal relationship between human body and magnetic field. The universe itself is a powerful magnetic field space. Without the powerful magnetic field force of the universe, there would be no synthesis of biological cells in nature, and life on earth would not exist. Most hallucinations in human dreams are caused by space magnetic radiation. Powerful magnetic wave radiation will also cause great harm to human beings, and it will also cause nuclear magnetic resonance effect in space. Many strange phenomena in nature have the power of strong magnetic field, which will cause homing pigeons to be unable to distinguish their geographical positions, make human beings misjudge their directions, and also cause nightmares, hallucinations and associations in human brains.