The invention relates to a composition for tonifying spleen and nourishing stomach. The composition is prepared from the following components in parts by weight: 45-55 parts of smoke plum, 15-25 parts of fig, 15-25 parts of semen raphani, 15-25 parts of poria, 10-20 parts of striga asiatica, 20-30 parts of lotus seed, 20-30 parts of yam, 3 parts of vitamin C and 3 parts of vitamin B. The method for preparing the composition comprises the following steps: weighing the components in the ratio; crushing all the components into 1,000 meshes; adding the crushed components, except vitamin C and vitamin B, into 300 parts by weight of water, and boiling for 30 minutes; concentrating to thick paste, cooling, adding the vitamin C and the vitamin B, and uniformly stirring to prepare pills. The composition for tonifying spleen and nourishing stomach is scientific in prescription, reasonable in dosage and easy to absorb, metabolism can be promoted, and functions of spleen and stomach can be strengthened.