The invention discloses an instant bellyful corn, fruit and vegetable powder and a preparation method of the instant bellyful corn, fruit and vegetable powder and belongs to the field of food processing. The corn, fruit and vegetable powder consists of natural corns, fruits and vegetables and auxiliary materials, wherein the corns mainly comprise brown rice, corns, wheat germ, oats, buckwheat and bean dregs, the fruits and vegetables mainly comprise carrot powder, banana powder, red date powder, burdock powder and tea powder, the auxiliary materials mainly comprise maltodextrin, beta-cyclodextrine, monoglyceride, lecithin, konjac glucomannan, pearl fruit and chitosan, the maltodextrin, the beta-cyclodextrine, the monoglyceride and the lecithin can improve the preparing performance and the mouth feeling, and the water absorption expansion rate of the konjac glucomannan, the pearl fruit and the chitosan is extremely high. The preparation method comprises the following main preparation steps of raw material cleaning, corn aging, processing powder preparation, crushing sieving, weighing, proportional mixing, packaging and product obtaining. The product has the characteristics that the nutrition matching is balanced, the eating is convenient, the preparing performance is good, the mouth feeling is exquisite, the bellyful feeling is instantly generated after eating, and the like.