Ship dynamic cooperative path planning is an important guarantee for ship safe navigation.In this paper,ship dynamic path planning under the condition of multi-ship intersection and obstacles on the route is studied,dynamic col-laborative path planning is described mathematically,simulated annealing algorithm and genetic algorithm are used to simu-late static path planning,and the simulation results are compared and analyzed.The collaborative strategy of multi-ship inter-section is proposed,and the simulation research is carried out by taking the dynamic collaborative path planning of two-ship intersection as an example.The results show that both algorithms can realize the ship path planning,and the ship can act-ively turn according to the planned route when multiple ships meet,and finally achieve safe navigation.