The invention discloses a blood stasis removing pill for treating ankylosing spondylitis. The blood stasis removing pill for treating ankylosing spondylitis is prepared by bulk pharmaceutical chemicals of 35-55 parts of notoginseng, 65-80 parts of angelica sinensis, 60-80 parts of salvia miltiorrhiza, 40-55 parts of flowers carthami, 40-60 parts of radix clematidis, 45-55 parts of ligusticum wallichii, 40-60 parts of rhizoma corydalis, 35-55 parts of myrrh, 35-55 parts of rhizoma wenyujin concisum, 40-55 parts of medicinal cyathula root, 45-65 parts of astragalus mongholicus, 35-55 parts of rhizoma cyperi, 45-65 parts of polygonum multiflorum, 40-50 parts of peach kernel, 40-55 parts of radix paeoniae rubra, 40-50 parts of lumbricus, 14-28 parts of scorpion, 10-16 parts of centipede, 35-55 parts of ramulus mori and 30-50 parts of zaocys dhumnade. The blood stasis removing pill for treating ankylosing spondylitis patients is remarkable in curing effect and has the effective rate as 93.8%.