Aiming at lack of study of the task scheduling for product cooperative development, a new theory of task scheduling for product cooperative development based on multi-objective optimization has been advanced, and the corresponding evaluation procedure for comprehensive evaluation indexes was put forward. Then, aimed at the peculiarity of the task scheduling arithmetic, the arithmetic of task scheduling based on hybrid particle swarm optimization was detailed. At last, the result of an instance with above theory was brought out, and the feasibility and advantage of this theory has been proved by way of comparing the different results with multi-objective optimization and single-objective optimization. 