The invention provides a preparation method of a traditional Chinese medicine for treating smoking type reflux oesophagitis, and belongs to the technical field of preparation methods of traditional Chinese medicines. Currently, metoclopramide is generally adopted to treat smoking type reflux oesophagitis, but has a certain side effect. The preparation method is characterized by comprising the following steps of immersing the following 45 Chinese medicines in water, namely five-leaved chaste tree, apricot kernel, aster, flos farfarae, ginkgo, perillaseed, swamp mahogany leaf, bulbus fritillariae cirrhosae, semen oroxyli, concha arcae, exocarpium, membrane of hen egg, clam, cynanchum glaucescens, mulberry leaf, chrysanthemum, mint, burdock, fructus viticis, cicada slough, starwort root, creeping oxalis, buckthorn, veronicastrum herb, daghestan sweet clover herb, coffee senna seed, common alstonia bark leaf, lophatherum gracile, butterflybush flower, mungbean, dandelion, red-spotted stonecrop, shortstalk slimptop meadowrue root, breynia fruticosa, small-leaved desmodium, wintercherry, fresh golden thread, uniflower swisscentaury root, olive, taenitis carnosa mett, creeping rostellularia herb, gamboge, potentilla discolor, platycodon grandiflorum and liquorice; and decocting with slow fire to obtain decoction which is the traditional Chinese medicine for treating smoking type reflux oesophagitis. The traditional Chinese medicine has the advantages of short course of treatment and high cure rate.