Mojokerto Regency is one of the districts in East Java Province which is the largest producer of sweet potatoes. The abundance of sweet potato production in Mojokerto Regency, it is necessary to process agricultural products to add value to a production in agro-industry. UD Ganesha is a home industry that manages Purple Sweet Potatoes into processed products. This study aims to analyze (1) income at UD Ganesha; (2) the added value generated from the processing of the Purple Sweet Potato in UD Ganesha. The method used in the study is the analysis of R / C Ratio and calculation of value added Hayami. Data collection techniques used were in-depth interviews based on questionnaire guides to the owner of the "Ganesha" home industry. The results showed that (1) Revenue for purple sweet potato chips products was IDR 31,047,906, while for purple sweet potato opaque products was IDR 20. 788,311 per month with R / C Ratio of purple sweet potato chips 1.43> 1, purple sweet potato opaque 1.67> 1, meaning that the processing of purple sweet potatoes by UD Ganesha is profitable and feasible; (2) Added value of purple sweet potato chips Rp. 4148,53 / Kg, sweet potato opaque Rp. 117,398.29 / Kg, the added value generated from processing purple sweet potato is more than 0, meaning that processing of sweet potato provides added value. Suggestions for home industry to increase the amount of production for Opak Yam products because they have greater added value and make new innovations from processed purple sweet potatoes