Based on the density function of the random variable of passenger distance, the expected return function of the passengers carried by the airport taxi is established, the expression of the total number of waiting passengers per unit time from any moment is given. On the basis of the relationship between taxi waiting time for passengers and the number of waiting passengers, an estimation formula for average service time of each taxi is obtained. The optimal decision-making model of taxi driver selection is constructed and the optimal selection strategy of taxi drivers is given based on comprehensively considering the relevant benefits and expenses of different choices of taxi drivers, examining the time interval corresponding to the complete process of taxi drivers waiting and carrying passengers from the time when the airport taxi decides to queue to pick up passengers to the destination, and the average net income per unit time corresponding to different choices of taxi drivers. A “priority” model for taxi drivers queuing to carry passengers in short distance and to return to airport to carry passengers again is constructed. The models have the advantages of effectively balancing the income and easy operation.