This research aims to study and determine the effect of diversification on household income of traditional fisherman in Mega Mas beach area and Bahu's area. Based on the results of this research in the social condition of traditional fisherman can greatly affect the level of income and expenditure themselves level of education age structure, work experience, number of dependents. From both a research sites in 22 respondents took them to diversify their own business. The types of diversification of fisherman, among others, motorcycle taxis, construction workers, carpenters, stalls, tailors, cafeteria. Based on the research results, the revenues that fisherman can earn per trip was very varied. Income (fishing and diversification) are the most that they can earn is accordance with the result is on respondent No.1 Mr. Sony Broh (58years old) in coastal areas Mega Mas with total revenues accounted Rp. 11.712.000,- and the type of business diversification is open stalls/small kiosk. And revenues for at least the results of the research is on the respondent No.2 Mr. Wilson Lumikis (45 years old) in coastal areas Mega Mas with total revenues of Rp. 3.412.000,- millions and diversification effort is to become a tailor.