The invention relates to a food composition used for controlling 
body weight and a preparation method thereof. The food composition comprises the ingredients according to weight percentage: 10-50% of coixseed 
powder, 5-30% of 
corn flour, 0.5-10% of red jujube 
powder, 1-20% of pine nut 
powder, 10-40% of 
whey protein concentrate powder, 5-35% of 
crystal line 
fructose, 1-10% of dried egg 
yolk, 0.5-10% of konjaku flour, 5-30% of cornmeal, 0.05-0.8% of 
vitamin composite powder, 0.8-3% of 
mineral composition composite powder and 0.1-1.5% of 
silicon dioxide. The preparation steps comprise all the ingredients are weighed according to the weight percentage and gradually mixed together. The composition is prepared by combining natural 
plant extracts and modern technology, and can enhance the 'satiety' by increasing the release of 
cholecystokinin (CCK) and 
glucagon (GLP) which are naturally secreted by the 
human body; meanwhile, right amount of 
dietary fiber having multiple sources can be added into the composition, so that 
gastric mucosa is protected and 
stomach has certain shrink space, thus the composition is good for controlling the 
body weight for a long time; furthermore, the composition also strengthens and supplements 
multiple vitamins and mineral compositions that are necessary for the 
human body in the daily life, so that the process of controlling the 
body weight is 
safer and has more remarkable effect.