Abstract: Objective To explore the characteristics of renal artery blood flow parameters at all levels in patients with cirrhosis. Methods Renal artery blood flow parameters at all levels were detected by the use of color Doppler ultrasound in 46 patients with compensated，56 with decompensated liver cirrhosis and in control. The renal artery （MRA），segmental arteries（SRA），interlobar artery（IRA）were selected to detect. Results Compared with control group，Ri，PI，Vmax and Vmix in compensated cirrhosis were not significantly different（P>0.05）， but the same indexes in decompensated cirrhosis group changed with obvious difference（P<0.01）. Blood flow velocitis of renal artery in different levels of patients with decompensated cirrhosis decreased. Conclusions The detection of renal artery blood flow parameters would provide a valuable basis in understanding the kidney disease progression.

Key words: Cirrhosis, Renal artery, Blood flow parameters, Doppler