Kelor leaf powder (Moringa oleifera Lamk.) effectiveness test for controlling soybean pest (Callosobruhus analis F.). Research aims to determine the effective dose in control the soybean pest. This research was conducted at the Laboratory of Protection, Faculty of Agriculture University of Muhammadiyah Yogyakarta in September 2017 until November 2017. This study used experimental methods, a single factor arranged in a complete randomized design. The experiments consist of four leaf powder concentrations, which are 0,25 gram, 0,5 gram, 0,75 gram, 1 gram. Treatments given to all these four concentrations using chemical/artificial pesticide (Phostoxin). This experiment observes pest mortality, mortality, efficacy, percentage of feeding inhibition, and pest development and growth tests. The results showed vegetable pesticide powder kelor leaf effect / positive to control soybean pest in stash. Effective dose of Kelor leaf powder is 0.25 gram / 100 gram of soybean seeds with 97 % mortality and 96.30 % efficacy.