This paper researches how the cruise company prices reasonably for the purpose of finding favors of more clients today with the rapid development of cruise tourist industry. We try to set up the tourist upgrade intention model, and make the upgrade scheme for the company, to maximize the expected ticket earnings. This paper comprehensively utilizes the Cobb-Douglas Function in the economics, divides into two situations by the standard for the quantity of residual seats of the first-class cabins, and makes the further subdivision in each category. In view of various situations, it is aimed to maximize the earnings of the cruise company while maximizing the satisfactory function. Finally, it finishes the earning maximization model of the satisfaction by improvement of Cobb-Douglas Function.
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