Ankylosing spondylitis is an inflammatory rheumatic disease which primarily affects axial skeleton, and root joints are also affected. The disease starts with pain in the lumbosacral part of the spine which spread to the gluteal region and to the legs because of evolvent of inflammatory process on SI joints. To confirm that the patient has ankylosing spondilitis it is neccesary to have radiologically confirmed sacroiliitis. The disease affects primarily men, and if affects women, simptoms are much milder. Once a year, all patients have the right on the physical therapy in the stationary facility. The crucial part of the physical therapy, along with electrotherapy, thermal procedures and manual technic, is the chinesitherapy and the hydrotherapy. From the chinesitherapy exercises we implement breathing exercises, various exercises for strengthening of the musculature, exercises for enlargement of the mobility of spine and exercises for the enlargenent of the mobility of joints. Along with the physical therapy, as the method of medical treatment,( medikamentozna) therapy is being implemented and, rarely, surgical prodecures. The aim of this work has been to look into the efficiency of kinesiotherapeutical exercises, whether in the gym or in the pool as a hydrotherapy. I had to limit the research to a pattern of three patients, because this disease is not a common one. I reached the results due to subjective examination of the patients and by conducting different measurements. The conclusion of the entire examination had confirmed the usefulness of the kinesiotherapy with patients having ankylosing spondylitis and it is possible to say that it is an inevitable part of the treatment.