According to Darwin's theory of evolution, human beings evolved from a branch of apes, and so did the human body, such as limbs. Because the forelimbs are often used to carry things and work, the hind limbs undertake the task of walking and gradually evolve into upright walking. According to this theory, some people even speculate that the human ancestor was a "sick monkey" with broken forelimbs. Because their forelimbs were broken, they had to walk on their hind legs, and then this feature was passed on to future generations and gradually evolved into adults. However, many relics before human history are by no means made by animals, which cannot be explained from the perspective of evolution. A new hypothesis of human origin has emerged. The hybrid theory of astronaut's gene and mother ape says that some petite dinosaurs are the dinosaur origin theory of human ancestors, that man is the synthesis of astronauts' synthetic products, and that the ocean generation theory from marine life challenges the theory of evolution without fear and shakes the theory of evolution deeply rooted in people's hearts. Mainly due to the defects of the theory of evolution itself, people can clearly see that the theory of evolution cannot be justified in many places. The origin of mankind has always been controversial. Looking back at history, it is not difficult to see the essence of the dispute, that is, one-time production or gradual evolution. In mythology and religion, people are all created by God at one time. In modern science, man is naturally evolved and is the darling of nature. Looking back at the current hypothesis of human origin, its essence is still the debate between "one-off" and "evolution", which is the crux of the problem. Among many hypotheses, only the synthesis theory is supported, but not all. Other hypotheses, regardless of hybridization theory, dinosaur origin theory, ocean origin theory, etc. Belonging to the category of "evolution", it still cannot escape the pattern of "gradual evolution", and the only difference from "evolution" is "seed". Man is Darwin, a great man who evolved from apes. Born in Southamptonshire, England, he loved nature since he was a child. He took part in the round-the-world voyage of the Navy Beagle as a botanist. He made an extensive survey of tropical and subtropical plants and animals. He devoted himself to scientific experiments and writing, and wrote a book on the Origin of Species. This book holds that the formation of species, their adaptability and diversity mainly lie in natural selection, and the organisms constantly mutate to adapt to the natural environment and compete with each other .59666.688686668086 Survivable variation is enhanced by genetic generation, and vice versa. To sum up: natural selection, survival of the fittest, survival of the fittest. He also applied the theory of evolution to animals and humans. This paper expounds the position of human beings in the animal kingdom and the basis for their evolution from animals, and draws the conclusion that human beings originated from apes. Humans and modern apes evolved from a common ancestor-forest apes. At first, forest apes lived in trees in the dense forest. Later, the climate in some areas became dry and forests decreased. The forest apes there were forced to live in the fields and gradually developed into modern people. Apes near the equator still live in forests. They gradually evolved into modern apes. It is a long process for forest apes to evolve into humans, and Engels explained this evolution process. Engels pointed out that apes who came to live underground walked on their hind legs, got food with their forelimbs, and defended their enemies with branches or stones. In the process of using these natural tools, they gradually learned to make simple tools. In this way, human ancestors had labor. Thanks to labor, the hand has been further developed and improved. At the same time, it also causes changes in other organs of the body, especially the brain. In the process of labor, language and consciousness are produced and society is established. So labor turned forest apes into people.