Based on the situation between UAV and target,the modeling and solution of unbalanced target task assignment are studied.Firstly,the situation between UAV and target in air combat battlefield is analyzed,a situation assessment method at a certain moment is proposed,and an unbalanced target assignment model for multiple UAVs is established.Then,the Hungarian-genetic algorithm is adopted to solve the problem.Finally,a simulation example is built for experimental analysis.The simulation results verify the effectiveness of the algorithm and also show that the Hungarian-genetic algorithm can improve the solving efficiency of the model.