Sexual reproduction combines the genetic information of parents, and its formation requires the combination of hermaphroditic germ cells, so that zygote has the characteristics of combining the excellent characteristics of parents. Vegetative reproduction mainly starts from the vegetative organs of the mother, gradually separates from the mother, and gradually becomes a new individual after a series of cell division and differentiation. Its genetic information comes entirely from its mother, so it can only keep its mother's shape. Because the starting point of its formation is the vegetative organ of the mother, it can accelerate the value-added, while the starting point of zygote starts from the fertilized egg and cannot increase the value quickly. Because vegetative reproduction can only inherit the genetic traits of the mother, the variation is small, so the vitality of the offspring gradually decreases and may eventually become extinct.