The invention discloses chicken feed with functions of 
growth promotion and 
immunity enhancement. The chicken feed is prepared from the following components: 25-35 parts of bean dregs, 10-18 parts ofsweet 
potato starch, 8-15 parts of sweet potato leaves, 5-10 parts of apple 
pomace, 5-10 parts of carrot 
pomace, 5-10 parts of seaweed 
meal, 8-13 parts of 
locust powder, 8-13 parts of fishbone dust, 8-13 parts of animal liver 
powder, 4-6 parts of a Chinese 
medicine additive and 1-3 parts of a 
trace element supplement agent; and the Chinese 
medicine additive is prepared from 1-3 parts of radix 
codonopsis, 5-8 parts of radix astragali, 8-15 parts of fructus crataegi, 8-15 parts of 
pericarpium citri reticulatae, 15-25 parts of radix glycyrrhizae, 15-25 parts of fructus hordei germinates, 5-10 parts of herba taraxaci, 5-10 parts of fructus lycii and 15-25 parts of 
flos lonicerae. A preparation method of the chicken feed comprises the steps that moderate raw materials are weighed by 
mass proportion, crushed and then screened, and 
powder of all components is mixed, stirred and fermented; moderate Chinese 
medicine is weighed by 
mass proportion, crushed, screened, mixed and stirred, and the Chinese medicine additive is obtained through pressurization 
reflux extraction; and the moderate Chinese medicine additive and the 
trace element supplement agent are added in a mixed material, and the mixed material is mixed and stirred, and then put into a pelletizer for 
granulation.