Budd-Chiari syndrome (BCS) is a rare disorder with an obstruction of the hepatic venous outflow tract. Previous studies reported that liver stiffness (LS) was associated with liver function in some chronic liver diseases. In this study, magnetic resonance elastography was for the first time applied to investigate the LS levels of BCS patients staged with different Child-Pugh grades. As a result, significant correlation between LS levels and liver function properties was shown in BCS patients. In addition, higher LS levels were found in BCS patients with higher grades and lower LS levels were observed for patients after receiving treatment.