BACKGROUND The aim of this study was to recognize the findings of ultrasonography (US) in remitted rheumatic arthritis (RA) patients for detection subclinical arthritis. METHODS This descriptive study was conducted during 2016 in a rheumatology center. A total of 70 patients with remitted RA were included in the study. Sonography was performed on all 70 patients who did not show any clinical arthritis in clinical examination to find synovitis and effusion were evaluated with gray scale and hyperemia with power Doppler US. RESULTS Nearly 44.3% (n = 31) of our patients had positive sonography results including 20% synovitis, 21.4% hyperemia, and 18.6% (n = 13) effusion. A total of 1960 joints of 70 patients were evaluated, in which 3.2% (n = 63) of joints had positive sonography findings including 1.2% synovitis, 1.5% hyperemia, and 1.1 with effusion. CONCLUSIONS US can diagnosis subclinical arthritis in patients with remitted RA who does not show any joint involvement in clinical examination.