The aging process experiebced by the edelry, the elderly result ini hanges that cause the elderly has decreased the work function of the brain/cognitive decline. Difference of age cause the existence of difference in behaviour, attitude, other personal characteristic and value. The cognitive function retreating can in the form of easy to forget to demensia. Target of this research is to analyze the compararison cognitive abilities in the elderly age gorup based in the village of daffodils district Bojonegoro Kanor 2014.This type research is comparative study of the analytical research. Its population is around the elderly in the village of daffodils in April 2014 as many as 259 people, with a total sample of 155 people, who met the inclusion criteria by using simple random sampling. How to capture the data with a questionnaire which was the in editing, coding, scoring, tabulating and analyzed the data with the Kruskal-Wallis test, with significance level α = 0,05. The result show the majority of respondents were aged 45-59 cognitive ability to function perfectly as many as 80 people (100%), and the majority of respondents were aged > 90 years of severe cognitive abilities serve as many as 4 people (100%). From the kruskal-wallis statistical test with value : 0,05. Value obtained : 0,000 < ( 0,05), so H0 is rejected. Its conclusion there are difference cognitive ability in the elderly age group based in the village of daffodils district of Bojonegoro Kanor 2014. So expect families who care for the elderly to give love to the elderly, be friendly, do not make anggry elderly and show appearances are alwas ready to help the elderly.