In real life, how to choose the optimal logistics distribution route is one of the most important issues in vehicle dispatch system of logistics.In view of logistics distribution path optimization, firstly, the restriction conditions of vehicle path are fully considered, a multiobjective optimization model of path planning is constructed with cost minimization and with minimum carbon emission, then, it is solved by using ant swarm algorithm simultaneously starting independent solution search in the multipoint of problem space, which guarantees that this algorithm has stronger global search capacity and has stronger robustness. In practice, experimental simulation is conducted by using MATLAB for this algorithm, and the optimal vehicle distribution path scheme is calculated. Simulation results show that this model and this algorithm can solve the related logistics distribution path problem so as to improve logistics service quality.