This paper attempts to explore the cost and earning analysis of ice plant of fishery industry of Ratnagiri. Cost and earning analysis of any business gives an idea about the economic feasibility. Considering vast differences in the production capacities of ice plants, costs and earning analysis was performed separately for the two categories of ice plants, first with less than 50 tonne and second with more than 50 tonne capacity. The net profit earned by less than 50 tonne capacity ice plant was much more less than that of more than 50 tonne capacity. All the economic indicators estimated clearly showed that the more than 50 tonne capacity ice plants were more profitable than that of less than 50 tonne capacity ice plants.