Calcific tendinitis on gluteus medius tendon of the amateur athletes were reviewed, and a study on the therapeutic effect of conservative treatment methods. From January 2003 to December 2010, among the patients who had been treated with calcific tendinitis on gluteus medius tendon, there were nine patients available to monitor more than a year as outpatients. ten cases were observed from them and were retrospectively analyzed and magnetic resonance examinations were performed in every case. All of the ten cases were initially treated with non-steroid anti-inflammatory oral doses. If a non-steroid anti-inflammatory treatment could not relieve pain or caused an aggravation of a condition, a local steroid injection was enforced. There were responses to non-steroid anti- inflammatory oral doses of therapeutic methods in four cases and the time required for the symptoms to be improved was approximately 3 weeks (range: 1–3 weeks). In the remainder of six cases, conditions got worsened or did not improve even after 3 weeks. In these cases, the condition was altered for better in 3 days (range: 1–3 days) by using local steroid injections. There was no recurrence in all cases. The amateur athlete with a severe pain around his or her hip joint should be questioned with calcific tendinitis on gluteus medius tendon and differential diagnosis of hip around diseases. After calcific tendinitis was diagnosed, initial treatment was considered conserevative treatment. Although it is invasive, the initial treatment with a local steroid injection is considered to be helpful in treating amateur athletes with calcific tendinitis.