For satisfying the demand of picking task scheduling, according to the optimization's features of the order-picking path in the book logistics center, the artificial fish-school swarm is used to solve the mathematical model. Through analyzing the characteristics of two models based on time-shortest and distance-shortest, it is put forward that the optimal solution of picking time can be sifted once again making use of the constraint condition of the shortest path to realize the second optimization, and this thinking is proved. The result is not only verified that the artificial fish-school swarm optimizing books-picking path is effective, but also proved that select the path that is distanceshortest from on the time-shortest solution.