Object ive To find related risk factors after PEIT under ultrasound .Methods We collected the data of 73 clinical PEIT cases from January 2007 to December 2011 .Univariate analysis found the related risk factors of PEIT.Multivariate analysis identified the independent risk factors .Results Single factor analysis showed that the differences between groups of patient′s sex,age,the positive and negative of serum HBsAg ,tumor location,tumor number in survival rates were not statistically significant;the differences in groups of tumor size , serum AFP levels,with or without portal vein tumor thrombus ,liver function(Child)grade,tumor type in survival rates were significant differences .Multivariate and stepwise regression analysis showed that liver function ( Child) grade,tumor type,tumor metastasis,portal vein thrombosis were factors relevant to prognosis ;all chi-square test,χ2=47.763,P<0.01;likelihood ratio test χ2=450.546 ,P<0.01.Conclusion liver function ( Child-pugh grade),pathological type of tumors,tumor′s metastasis,emboli in portal vein are the risk factors after PEIT .