Basically this research was done to find out on how the implementation of a warehousing management system. The object of this research is at the Spare Parts Warehousing of PT. Astra International Tbk-Honda Motor Yogyakarta. Refers to the formulation of the problem that has been used before, it can be drawn in few purposes such as analyzed of the warehousing management system that had been taken, the excess of the warehousing management system implemented, the weaknesses of the warehousing management system applied, the obstacles faced and find solutions which can be applied in relation to the warehousing problems in spare parts warehouses of PT. Astra International Tbk-Honda Motor Yogyakarta. This research uses primary and secondary data, and the related research methods are applied into three stages, namely content analysis, fishbone analysis, and analysis using ratio calculations to find out the effectiveness of warehousing at PT. Astra International Tbk-Honda Motor-Yogyakarta. Based on the analysis that has been conducted before, the results of this research showed that the management system that is implemented in the warehousing of PT. Astra International Tbk-Honda Yogyakarta has used a Warehouse Management System by using an SAP-based information system but there are still obstacles that must be found in solutions such as the lack of warehouse capacity and the unfulfilled targets.