Freight forwarding alliances often have incomplete or uncertain information in the actual revenue allocation, such as ocean freight rate fluctuation. In order to effectively solve the problem of revenue allocation strategy of freight forwarding alliance under the fuzzy situation, the trapezoidal fuzzy number improved Shapley value is created. This cooperative game solution enhances the stability of the freight forwarding alliance and its market competitiveness by equalizing the satisfaction of freight forwarding enterprises. In the fuzzy situation, the satisfaction of the players is maximized by minimizing the excess contribution, according to which the trapezoidal fuzzy number least squares contribution is calculated and used to replace the marginal contribution of the classical Shapley value, thus creating the trapezoidal fuzzy number improved Shapley value. The example results show that the trapezoidal fuzzy number improved Shapley value fully considers the satisfaction of the players in the game, which makes the revenue allocation strategy more fair and reasonable. The trapezoidal fuzzy number improved Shapley value can effectively solve the problem of revenue distribution strategy of cooperative alliance with fuzzy uncertainty such as freight forwarding alliance, and then promote the stable and sustainable development of cooperative alliance.