The invention discloses traditional Chinese medicine oral liquid for treating proventriculitis and muscular stomach inflammation of chickens. The traditional Chinese medicine oral liquid is prepared from, by weight, 20-60 parts of coptis chinensis, 50-80 parts of scutellaria baicalensis, 30-50 parts of cape jasmine, 10-30 parts of common andrographis herb, 10-30 parts of the root of Chinese pulsatilla, 8-20 parts of liquorice, 8-15 parts of agastache rugosus, 8-15 parts of white atractylodes rhizome, 8-15 parts of rhizoma atractylodis, 8-15 parts of mangnolia officinalis, 8-15 parts of poria cocos, 8-15 parts of fructus forsythiae, 8-15 parts of radix bupleuri, 8-15 parts of platycodon grandiflorum, 8-15 parts of dried tangerine or orange peel and 8-15 parts of pericarpium arecae. Ethanol extraction and water decoction are carried out on the raw materials to obtain the traditional Chinese medicine oral liquid. The traditional Chinese medicine oral liquid solves the problems that the death rate of chickens suffering from proventriculitis and muscular stomach inflammation is high and the feed conversion is low, becomes effective more rapidly compared with traditional western medicine and conventional traditional Chinese medicine formulas, can cure proventriculitis and muscular stomach inflammation and recover muscular stomachs and glandular stomachs, and particularly has the outstanding effects on improving digestion and absorption functions and reducing the feed conversion ratio.