It is attested by various studies that implementation of soil and water conservation technologies is a must to tackle an ever expanding degradation in farmlands and marginal lands and to increase soil fertility. However, there is a gap in adoption of these technologies in Aletawendo district to the extent it should be. Therefore, this study was conducted to investigate determinants of adoption decision of farmers. To achieve this objective, both primary and secondary data were collected. Primary data were collected from randomly selected 372 farm households and 25 natural resources management experts found in the district. Secondary data were collected from different published and unpublished sources. The data collected were analyzed using descriptive statistics and econometric model (logit model) with the help of STATA computer program. The study result indicated that seven variables were affecting adoption decision of farmers significantly and positively. These were education level of the household head, training participation, total income, perception of farmers for SWCs, preference of farmers, extension contact, and land ownership certificate.