Given the assumption that Korean lottery authority wants to stabilization the sales of its product, this paper analyzes Korean lottery market in the view of sales stabilization and market efficiency. This paper proposes several diagnoses to improve lottery market efficiency; (i) reduce the number of lotteries such as instant games and printed lotteries, (ii) redefine the role of lottery committee to simplify the process of lottery production and sales. This paper also propose how to stabilize lottery sales and lottery profits; (i) reform other lotteries to be more competitive and then to be able to compete with Lotto, (ii) prepare sudden decline in Lotto sales by analyzing consumer's behavior on different lotto games.

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