Nutritional composition for moisturizing lung and method for preparing the same

A nutritional composition for moisturizing lung, comprising the following raw material components and proportions thereof, in parts by weight (pbw):

• rice 55-90 pbw, wheat 7-25 pbw, Chinese yam 3-15 pbw, lily 2-9 pbw, Polygonatum odoratum 0.2-1 pbw, and citron 0.1-1 pbw, wherein the composition is a composition prepared by the process comprising the following sequential steps:
• step 1, preparing raw materials:
• purifying and sorting rice, wheat, Chinese yam, lily, Polygonatum odoratum, and citron for subsequent use;
• step 2, frying:
• frying the prepared raw materials under a condition of 100-200° C. for 25-120 min;
• step 3, dosing:
• grinding the fried raw materials, then mixing and stirring evenly the ground materials according to the proportions to obtain a rice powder;
• step 4, granulating:
• extruding the rice powder obtained in step 3 through a double-screw extruder, followed by gelatinization and granulation thereof, to obtain mixed rice grains;
• step 5, drying:
• drying the mixed rice grains through a microwave dryer, wherein a water content of the material is kept below 12%, and cooling the dried mixed rice grains at room temperature;
• and
• step 6, sieving and packaging:
• sieving the cooled mixed rice grains, and optionally vacuum-packaging the sieved mixed rice grains, thereby obtaining the lung-moisturizing nutritional composition.