The invention provides a preparation method of a traditional Chinese medicine for treating liver-fire type hypopyon, and belongs to the technical field of preparation methods of traditional Chinese medicines. Currently, sulfonamides and antibiotics are generally adopted to treat liver-fire type hypopyon, but kanamycin is toxic to auditory nerve and kidney, wherein the traditional Chinese medicine is toxic to both auditory nerve and kidney, and the toxicity to auditory nerve is shown as tinnitus, dysecoia and the like. The preparation method is characterized by comprising the following steps of immersing the following 31 Chinese medicines in water, namely dutchmanspipe root, radix curcumae, shaddock, immature bitter orange, orange, selfheal, feather cockscomb seed, butterflybush flower, pipewort, scouring rush, chrysanthemum, mint, cicada slough, scutellaria baicalensis, golden thread, golden cypress, broomjutre sida herb, iron holly bark, starwort root, creeping oxalis, buckthorn, veronicastrum herb, daghestan sweet clover herb, coffee senna seed, common alstonia bark leaf, lophatherum gracile, mungbean, dandelion, fresh golden thread, sophora flower and liquorice; decocting with slow fire; and filtering and removing slag to obtain decoction which is the traditional Chinese medicine for treating liver-fire type hypopyon. The traditional Chinese medicine has the advantages of small toxic and side effect of prepared Chinese medicine decoction, short course of treatment and high cure rate.