Stem cells are a primitive cell population with the potential for self-renewal and multi-directional differentiation, and are the cells of origin that form various tissues and organs. When mature somatic cells of the body die due to aging or injury, stem cells produce their substitutes at any time to maintain various cell regeneration And tissue repair. Unfortunately, with age, the ability of the stem cell population to proliferate and differentiate will be severely weakened. From this perspective, intervention and restoration of stem cell vitality in some way are expected to repair tissue function and achieve Delays the effects of aging. What does this text mean? ['The human desire to achieve youthful beauty depends on the application of stem cell technology.', 'Rejuvenated stem cells can replace a variety of cells that die from aging or injury.', 'Stem cell technology will help improve human health and quality of life.', 'The human body ages because senescent cells cannot be replaced by stem cells in a timely manner.']