Objective To systematically evaluate the storage effect and transplant outcomes of University of Wisconsin (UW) preservation solution and histidine-tryptophan-ketoglutarate (HTK) preservation solution on liver allografts.Methods Literatures were researched using PubMed,Embase (1980-),Ovid Medline (1948-),The Cochrane Library,Wanfang database,VIP database from the database establishement to October 2015 with the key words including organ preservation,storage solutions,Histidine-tryptophan-ketoglutarate or HTK,custodial,bretschneider,University of Wisconsin,UW solution,viaspan,cardiosol,belzer solution,hepatic transplantation,liver transplantation,viscera transplantation,liver grafts,hepatic grafts,liver allografts,hepatic allografts,器官移植,器官保存液,UW,HTK,肝移植and比较.Two reviewers independently screened literatures,extracted data and assessed the risk of bias.All the patients using UW and HTK preservation solutions were respectively allocated into the UW group and HTK group.Count data were represented as the odds ratio (OR) and measurement data were represented as the standardized mean difference (SMD) and 95％ confidence interval (CI).The heterogeneity of the studies was analyzed using the I2 test.Results Eleven literatures were retrieved,and the total sample size were 34 475 patients including 25 248 in the UW group and 9 227 in the HTK group.The results of Meta analysis showed that there were no statistically significant differences in the primary transplants nonfunction,retransplant rate and 1-year grafts overall survival rate between the 2 groups (OR =1.18,0.84,0.97,1.02,95％ CI:0.55-2.57,0.47-1.50,0.66-1.42,0.66-1.58,P ＞0.05).There were also no statistically significant differences in the levels of alanine transaminase (ALT),aspartate transaminase (AST),total bilirubin (TBil) at postoperative day 1 between the 2 groups (SMD =-0.19,-O.30,0.30,95％ CI:-0.62-0.23,-0.70-0.10,-0.01-0.61,P ＞0.05).There were no statistically significant differences in the postoperative prothrombin time(PT) and alkaline phosphatase(ALP) between the 2 groups (P ＞0.05) and in the incidence of postoperative biliary complications between the 2 groups (OR =1.49,95％ CI:0.97-2.30,P ＞ 0.05).Conclusion There is similar storage effect between UW and HTK preservation solutions on liver allografts,and no difference in the transplant outcomes.