One of caring to maximize uterine contraction during the puerperium is by doing postpartum exercise. The purpose of this study was to determine the influence of postpartum exercise on a uteri involution maternal postpartum look for decreasing of fundal height on maternal postpartum. This study was a pre-experimental study using a comparison group design. The population in this study was a postpartum mother who gave birth normally in independent midwifery in the region of Puskesmas Curup, by purposive sampling as 40 people. The intervention group did postpartum exercise, then measured the fundal height used pelvimetry The result of this research got mean of the fundal height of 6-hour postpartum in intervention group 15.20 cm ±1.88 cm and 14.45±1.35 cm in the control group. Mean of fundal height third day in the intervention group 10.70±2.13 cm and 11.95±1.73 cm in the control group. Mean of fundal height sixth day in intervention group 6.75 cm ± 1.44 cm and 9.10 ± 1.48 cm in the control group. While mean of fundal height tenth day in intervention group 0.00 cm and 4.80±3.05 cm in the control group. There was a significant difference in the decrease of fundal height between the two groups third day (p=0.049), sixth day (p=0.00), and tenth day (p=0.00). Postpartum exercise has an effect on the decrease of fundal height. Decreasing of fundal height were faster in the intervention group than in the control group.