A peanut yield increasing spraying agent is disclosed and includes an A agent and a B agent. During using, the A agent and the B agent are mixed according to a ratio of 1:1, then 100-200 times of water is added and fully mixed, and peanut leaves are directly sprayed with the mixture. The spraying agent contains fragrant bone powder, peanut bran, schisandra propinqua powder, liquorice root powder, molasses, sea salt, grosvenor momordica fruit, sodium tetraborate, and the like, is comprehensive in nutrition, safe, free of side effects, and capable of rapidly supplementing nutrients needed by peanut and increasing the yield by 20% or above.