The invention discloses a medicament for treating deficiency of kidney, frequent micturition, urgent urination and prostatitis, which is prepared from 38 Chinese medicinal herbs: common curculigo rhizome, tuber fleeceflower root, ginseng, hippocamp, common macrocarpium fruit, malaytea scurfpea, siberian solomonseal rhizome, hairy antler, songaria cynomorium herb, root of red-rooted salvia, sevenlobed yam rhizome, epimedium, astragalus, raw rehmannia root, prepared rehmannia root, cochinchnese asparagus root, ophiopogon root, shizandra berry, medlar, cinnamomvine, white poria, seal's genitals, hawthorn fruit, raspberry, chaff flower root, platycladi seed, eucommia bark, Chinese angelica, medicinal indianmulberry root, south dodder seed, desertliving cistanche, polygala root, phellodendron, anemarrhena root, cassia bark, placenta, prepared common monkshood daughter root and black sesame seed. The medicament has the advantages of addressing both symptoms and root causes along with appropriate compatibility, good curative effect, short treatment course, high cure rate, low recurrence rate, no toxic or side effect, convenience for application, low treatment cost and the like.