The invention discloses a functional factor reinforced crunchy candy and a processing method thereof. The processing method comprises the following steps: firstly, mixing 35 to 55 parts of isomaltose hypgather powder, 10 to 20 parts of erythritol powder, 10 to 20 parts of isomalt powder, and 25 to 35 parts of water and heating to a temperature of 70 to 90 DEG C to enable sugar to be molten; and then sugaring off, cooling, separating sugar semifinished products, preparing peanut butter rich in a garcinia mangostana L pericarp compound coating, crisping to make a core, whitening to prepare couverture and forming, wherein the peanut butter rich in the garcinia mangostana L pericarp compound coating is prepared by compounding a compound A, a compound B, a compound C and vitamin C which are separated from garcinia mangostana L pericarp according to a weight ratio of 1:(1-2):(1-2):(1-2) to form a garcinia mangostana L pericarp active material compound coating and adding the garcinia mangostana L pericarp active material compound coating into peanut butter. According to the invention, a heat value of the cushion is reduced; functions of not decaying teeth, removing free radicals, conditioning intestinal tract and the like and an antioxidation function are given to the cushion; and preservation performance of the cushion is improved, so that shelf life is prolonged.