The purpose of this study is to analyze conversion of waste into biogas cattle against the income of the people in Karo and Deli Serdang. This study use primary data through questionnaires and interviews to people who are or have been managing the biogas from cattle waster in Karo and Deli Serdang. The analytical methods used in this study are descriptive statistics and multiple linier regression. The resuld showed that the time use of biogas, the price of cow manure and the number of dependents simultaneously positive and significant impact on people’s income. The time use of biogas is partially not significant positive effect on people’s income and the price of cow manure partially not significant positive effect on people’s income and the number of dependents partially positive effect is not significant to people’s income 100501159