The invention provides a traditional Chinese medicine preparation for treating hemophilia and a preparation method thereof. The traditional Chinese medicine is prepared from the following crude drugs of water chestnut, radix rubiae, buffalo horn, astragalus membranaceus, chickweed, codonopsis pilosula, hairyvein agrimony, herba violae, subprostrate sophora, celastrus aculeatus, dried rehamnnia root, fragrant hair grass, lalang grass rhizome, radix ranunculi ternate, placenta hominis, antelope horn, sweet wormwood, receptaculum nelumbinis, rhizoma bletillae, broken dense flowers and liquorice. The traditional Chinese medicine preparation has the beneficial effects that the traditional Chinese medicine preparation is a pure traditional Chinese medicine preparation, free of toxic and side effects, accurate in effect of bleeding pain, fast to become effective, good in treatment effect, convenient to take, available in materials, and low in drug cost, does not generate the drug dependence after being taken for a long period of time, and can help a sufferer get rid of whole blood and blood coagulation factors; the economical burden on treatment of the sufferer is reduced.