The invention relates to the medical health field, in particular to a pill for the treatment of prostatic diseases and a preparation method thereof. The pill for the treatment of the prostatic diseases is prepared from aristolochia cinnabarina, rhizoma cimicifugae, actinolite, dianthus superbus, juncus effusus, curcuma zedoary, radix aconiti carmichaeli, chingma abutilon seed, lindernia antipoda, honeycomb, indigo naturalis, radix stemonae, common fenugreek seeds, gorgon euryale seed, fiveleaf akebia fruits, paniculate swallowwort root, mulberry, semen cassiae, cassia twig, Chinese yam, poria cocos, cortex moutan, rhizoma anemarrhenae, fritillary, garden balsam stems, herba epimedii, radix angelica sinensis, shixiao powder and portulaca oleracea. The preparation method includes the following steps: taking all the materials, mixing all the materials evenly, decocting the materials with 6-10 fold water for 2-4 hours three times, mixing decocted fluid, filtering the fluid, collecting filtrate, concentrating the collected filtrate into extract, adding auxiliary materials or excipients used for forming a preparation, and preparing all the materials into the pill. The pill for the treatment of the prostatic diseases takes effects quickly, is convenient to take, and has no side effects.