The historical intensity method and benchmark value method are commonly used methods for initial allocation of carbon quotas.At present, only Shanghai and Shenzhen in China have included the port industry in the carbon trading system, and both use the historical intensity method for initial allocation of quotas.This paper proposes five carbon emission quota allocation criteria for the port industry based on the principles of efficiency and fairness, namely optimal industry emission reduction efficiency, optimal carbon emission efficiency, encouragement of advanced players, historical emission responsibility, and large enterprise responsibility, and constructs a comprehensive evaluation model for carbon quota allocation in the port industry based on TOPSIS entropy weight method.Empirical analysis is used to evaluate the efficiency and fairness of three quota allocation methods: historical intensity method, benchmark value method based on carbon intensity ranking, and mixed allocation method based on energy consumption limit.The results show that under the efficiency-fairness integrated objective and the two sub-objectives of efficiency and fairness, the relative proximity between the evaluation index and the optimal solution of the mixed allocation method based on the energy consumption limit is 0.566, 0.711 and 0.638, respectively, ranking first among the three allocation methods and obviously higher than the other two methods under the fair sub-target and comprehensive evaluation target.Although the mixed distribution method increases the complexity of the specific implementation process, it also improves the efficiency and fairness of the distribution results.