In order to solve the technical difficulties of multi-objective dynamic allocation of road transportation vehicles under emergency conditions, this paper proposes a multi-demand point oriented dynamic allocation optimization model for emergency transportation vehicles, under the condition of limited and scarce resources of emergency transportation vehicles, substituting the role of parameters such as transport utility, delay cost and fairness, researching and analyzing the dynamic allocation law and the impact of the role of emergency transportation vehicles and analyzing its allocation mechanism through numerical simulation. Simulation and comparison analysis of its allocation mechanism, simulation knot simulation shows that the proposed multi-objective dynamic allocation model can consider the conditions of comprehensive factors to reveal the dynamic allocation mechanism under the quadratic utility function and the optimal dynamic change process of the target utility within the model, and make clear that the decision-making parameters have a regulating effect on the dynamic allocation of emergency transportation vehicles at multiple demand points.