The spiritual world exists only in human society. Do animals have a spiritual world? Experiments show that higher animals, such as primates and cetaceans, have high-level neural activities, can learn and remember, and even have feelings of love and hate, but after all, they are much lower than humans and are not enough to form a complete spiritual world. The spiritual world is only a form of expression of the material world and an advanced form of life movement. Biological science and technology is the theoretical system and method technology to study the life world. It is human's systematic understanding of the life world. Since the spiritual world is the advanced form of life movement, all achievements of spiritual civilization will inevitably involve the concept of life and be evaluated by biological science. Therefore, life science is an important basis for the formation of scientific values.