The invention discloses a poria cocos Chinese yam solid beverage and a preparation method thereof. The solid beverage is prepared from poria cocos powder, rhizoma dioscoreae powder, lily bulb powder,red date powder, Chinese wolfberry powder, hawthorn fruit powder, honeysuckle flower powder, glucose, maltodextrin, fructo-oligosaccharide, calcium gluconate, ferrous gluconate, zinc gluconate and stevioside. The preparation method comprises following steps: the poria cocos powder, the hawthorn powder and the like are prepared by adding water into poria cocos, hawthorn and other raw materials, boiling, filtering, concentrating, drying and crushing of a boiled soup are carried out; the raw materials are uniformly mixed in proportion, granulating by using 95% edible ethanol is carried out, and then fluidized drying and finishing are carried out to obtain granules. According to the poria cocos Chinese yam solid beverage, the raw materials are carefully selected and scientifically proportioned, the spleen and stomach of children are regulated, macroelements and microelements necessary for children are supplemented, and the beverage is balanced in nutrition and convenient to eat.