Average distillation of 10kg raw orange peel and grapefruit were obtained essential oil volume of 249,7 ml and 220mI, respectively. Optimal volume of essential oil for dealing 5g styrofoam are 10ml. The average time for dealing styrofoam is 4,18 minutes and 4,79 minutes in essential oil of orange and grapefruit, respectively. Essential oils after dealing the styrofoam can be recovered up to 95 percent - 96 percent which can still reuse. So, using essential oils to treat styrofoam waste can be replaced acetone chemical, it was opened a promising new direction in the field of environment and high efficiency processing, saving, renewable, especially it is not affect the environment and human health.