The invention provides a composition for preventing 
pneumoconiosis and a preparation method thereof, wherein the composition is prepared from 
cordyceps militaris, frosted mulberry leaves, tea polyphenols, gingkgo, fructus monordicae extracts, barbary wolfberry fruits, peach kernels, apricot kernels, and malto 
dextrin, and the preparation method comprises the steps of: (1) soaking the gingkgo, barbary wolfberry fruits, frosted mulberry leaves, peach kernels and apricot kernels in water; (2) heating the soaked materials to be boiling, leaching, then carrying out 
flocculation precipitation on leach liquor, and concentrating a supernatant fluid into a thick paste; (3) continuously adding water into the rest materials, heating and leaching; (4)mixing and concentrating the two-time extracts into a thick paste, carrying out 
vacuum drying and then crushing; (5) sieving the extract, and fully mixing with the 
cordyceps militaris nano 
powder, malto 
dextrin, tea polyphenols and fructus monordicae extracts; and (6) fully mixing the extract with the mixture to be uniform, mixing with 
alcohol, and palletizing. The composition has an obvious free radical 
scavenging action, reduces 
ceruloplasmin, obviously restrains 
pneumoconiosis fibrosis, and greatly improves the respiratory symptoms of patients with 
pneumoconiosis.