The invention discloses a traditional Chinese medicine composition, in particular discloses a traditional Chinese medicine composition for treating prostatic hypertrophy and a preparation method thereof. The traditional Chinese medicine composition for treating prostatic hypertrophy is characterized by being prepared from the following components: Radix scutellariae, phellodendron bark, oldenlandia, tuckahoe, rhizoma alismatis, rhizoma anemarrhenae, safflower, raspberry, self-heal, houttuynia, rough gentian, dried rehmannia root, yam rhizome, chuanxiong rhizome, angelica, morinda root, broomrape, moutan bark, gardenia, red peony root, dandelion, lysimachia, coix seed, prepared aconite root, radix linderae, cassia, rhubarb, bitter cardamon, turtle shell, centipede, bombyx batryticatus, oyster, pangolin, antler, mastic, myrrh and menthol. The traditional Chinese medicine composition prepared by the invention can be used for clearing away heat to purge pathogenic fire, removing dampness to reduce phlegm, promoting blood circulation to diminish inflammation, nourishing the kidney to replenish essence, nourishing the kidney to reduce urination, softening hardness to dissipate stagnation and dissipating blood stasis to remove stagnation, and can improve the immunity of human bodies, improve the arterial blood flow and dilate vessel walls. By using the traditional Chinese medicine composition for treating 920 cases, the total effective rate reaches 96%.