Many people have strange dreams unconsciously after a hard day's work and deep sleep. Why do people dream? Why do people dream? A theoretical study shows that when people enter dreams, their eyes usually turn with you, but this phenomenon does not reveal that eye movement is the main reason for people entering dreams, or it may be caused by fire, because people will turn their eyes after entering dreams. This statement is not unreasonable. Because when people dream, they are still half asleep most of the time, not completely asleep. This also shows from the side that people's sleep quality is usually closely related to whether they dream or not. What most people have frankly accepted is that on the issue of the origin of human life, life was born in an inanimate material state, which has basically become a consensus. To put it bluntly, the human body is basically composed of inanimate matter, or we humans are a part of inanimate matter. Therefore, it is not difficult for us to imagine that some information that constitutes the substances in our lives and new connections between different substances, just like the chemical reactions mentioned in our daily life, will produce some new things. At this special moment, the sensory organs of the whole body are still in a relatively active state, which seems to bring us and our thoughts to another time and space. Moreover, these sensory organs will move with other organs. So, what is the reason why humans dream? Where do dreams come from? Based on the above information, dreams cannot be explained according to the existing technical level and theoretical knowledge, so we can only continue to explore and further study.