Dengue Hemorrhagic Fever (DHF) is an infectious disease caused by the dengue virus and is transmitted through the bite of the Aedes sp mosquito. Control efforts in the community are chemical insecticides and cause resistance to mosquitoes and poisoning in humans. Control efforts can be in the form of natural insecticides of plant origin, one of the essential oils of citronella and celery. This study aims to determine the effectiveness of the combination of citonella and celery essential oils with a combination variation of 1%, 0.5% and 2%, and produce repellent lotion preparations that meet the standards. The methodology in this study is experimental research. Tests performed on lotion preparations include organoleptic tests, homogeneity, pH, viscosity, dispersality, irritation and repellent tests. The data obtained were then analyzed using SPSS 16 with Shapiro-wilk and continued with wilcoxon test. The results showed that the entire lotion preparation of the combination of citronella essential oil and celery was greenish-white, with a characteristic aroma of citronella and celery, semi-solid, homogeneous, with the pH of 7.2 - 7.7 (4.5-8), a dispersion test of 5.6 cm - 6.6 cm (5-7 cm) and a viscosity test produced 1404.7 cP - 5103.6 cP (2,000 cP-5,000 cP) that the lotion preparation met the criteria of the standard range of values. The effective formula of the essential oil combination is formula 3 with a combination of 1:1 having the highest repellent protection power of 85% and the formula that meets the evaluation standard is F1-F5.