The invention discloses a Chinese medicament for treating urinary tract infection, which is characterized in that the main components comprise Chinese medicinal herbs such as 20 grams of white-flower patrinia herb, 20 grams of dandelion, 15 grams of amur corktree bark, 9 grams of akebia stem, 90 grams of ophiorrhiza pumila, 9 grams of achyranthes root, 10 grams of Chinese thorowax root, 10 grams of rhizoma imperatae, 15 grams of pyrrosia leaves, 15 grams of plantain seed, 20 grams of talcum, 20 grams of mulberry twig, 5 grams of cassia twig, 15 grams of trumpetweed, 10 grams of tip of liquorice root, and the like. A preparation method comprises the following steps: putting the Chinese medicinal herbs into a container, boiling the Chinese medicinal herbs by hard fire firstly, then decocting the Chinese medicinal herbs by mild fire for 30 minutes, and taking 400 milliliters of decoction, wherein the decoction is warmly taken in the morning and evening, one dosage is taken every day, and one treatment course contains five dosages. The Chinese medicament is prepared from the pure Chinese medicinal herbs, adopts the prior preparation method, keeps the property of the medicament, has the efficacies of eliminating dampness and heat, dredging stagnation, channels and collaterals, activating yang and invigorating qi, achieves the aim of treatment, and has no side effect.