Introduction: One of the most common and annoying problems during pregnancy is physiological foot edema that may cause activity restrictions during pregnancy for pregnant women. Present study aimed to determine the effect of foot massage on physiological edema during pregnancy.Methods: This study was non-randomized clinical trial and performed in 2012. 120 pregnant women aged 20 to 35 years were non randomly assigned to treatment and control groups. Treatment group, received 20 minutes daily foot massage during 5 days. Data were analyzes using SPSS statistical software, independent t-test and Mann-Whitney U test. Foot edema measured by using a measuring non- elastic tape on the leg.Results: The results indicates a statistically significant difference between the average of the feet environments (around the ankle, heel and metatarsal joints between the finger bones) in both treatment and control groups (P<0.001).Conclusion: The results of this study showed that massage therapy is effective in reducing physiological edema during pregnancy. Therefor the lower limb massage can be performed by trained midwives and as a useful, low risk and low cost method in prenatal clinics or pregnant women homes.