The reason why cloning technology is prohibited is due to various considerations. First, cloning technology is not perfect; Second, cloning technology is a kind of "asexual reproduction" technology, which is inconsistent with traditional human ethics. Dolly, the first cloned sheep in 1997, has been suffering from senile disease for four or five years, which indicates that cloning technology has potential safety hazards and is not suitable for human use.
 1、 Reasons why cloning technology is prohibited
 Cloning technology is forbidden to be used for human beings for various reasons. First, cloning technology is not perfect, and the creatures used for cloning are not as perfect and healthy as expected. Moreover, cloning technology is a product of nature, which violates many ethical issues. If it is directly applied to human beings and faced with the same life, it will inevitably cause panic.
 Moreover, cloning technology is actually a kind of "asexual reproduction" science and technology, which runs counter to the concept of returning to nature advocated by most scientists in the world. The relationship between human clones is also contrary to the traditional way of determining kinship based on the theory of "Xuanyuan" and the traditional moral concept of human beings.
 When did cloning technology officially appear?
 In 1997, Dolly, the first cloned sheep, was born in Britain, which is also the first cloned creature in the world. However, due to the imperfection of cloning technology, Dolly is not healthy. When she was four or five years old, she suffered from a disease that only old sheep would have, which posed a great health risk. This was one of the reasons why many countries opposed cloning technology.