Abstract: Objective To assessment the effect of low dose ionizing radiation on liver function. Methods According to predefined inclusion, exclusion criteria, the relevant literatures were searched and qualified literatures were determined. Based on total number of liver function examination, number of abnormal liver function in radiation group and control group, the OR as the effect size, then choose the appropriate model by the heterogeneity test for the analysis. Results The combined OR is 1.59, 95%CI [1.25-2.02]. Conclusions Long term exposure to low dose-ionizing radiation has significant outcome shown by higher rate of liver function abnormality.

Key words: Key words: radiation workers, liver function, abnormal rate