The invention discloses a small-molecular compound / combination for preventing, delaying or reversing the aging of cells, tissues, organs and bodies, a product thereof, and a use of the compound / combination and the product. The small-molecular compound / combination includes at least one of a DNMT inhibitor, an HMT inhibitor, a
histone demethylase inhibitor, a TGF-beta inhibitor, a WNT / beta-
catenin agonist, a cAMP
agonist, a
lysine deacetylase inhibitor, an RAR
agonist and an ROCK inhibitor. The small-molecular compound or the combination thereof is adopted to prevent,
delay or reverse the agingof cells, tissues, organs and bodies and prolong the
telomere length of the cells, and has the advantages of clear action target, clear, mature and stable composition, and accuracy in regulation of the anti-aging process; and the
quality control and the large-scale production of the small-molecular compound are easy. The bodies or cells do not express dry genes in the action process, so the safetyis high; and the small-molecular compound and the combination thereof can be easily absorbed by the bodies, can prevent,
delay and reverse the aging at the overall level of cells, tissues, organs andbodies, and is of great significance to delaying the process of human aging and improving the health state and the
life quality.