Abstract: Objective To investigate the application value of Superb micro-vascular imaging(SMI) and Power Doppler ultrasound(PDUS) in Finger and Wrist Joints with Rheumatoid Arthritis in clinical remission. Methods The bilateral wrist, metacarpophalangeal joint and proximal phalangeal joint of 40 clinical remission patients and 20 healthy volunteers were examined by ultrasound. The blood flow grading results of PDUS and SMI on thickened synovial membrane were recorded. To observe the difference between the two blood flow patterns in the display rate of synovial blood flow and the classification of synovial blood flow. Results In the 40 patients with RA in clinical remission,the remission rates of PDUS and SMI were 60% and 27.5%, respectively. There was significant difference between the two groups (P < 0.05); In the 20 healthy volunteers,the detection rate of synovial blood flow by SMI and PDUS was 0. However, In the 40 patients with RA clinical remission, the synovial blood flow display rates of PDUS and SMI were 8.64% and 12.8%,respectively,The difference of blood flow signal display rate between the two blood flow patterns was statistically significant(P < 0.05); The results of synovial blood flow grading by PDUS and SMI were consistent (kappa=0.752);after intensive treatment of SMI positive patients, the rate of synovial blood flow display decreased significantly. Conclusion In the clinical remission stage of rheumatoid arthritis. SMI and PDUS have certain clinical application value , but SMI is more sensitive than PDUS in detecting the blood flow signal in the synovial membrane of finger and wrist joints.