This paper studies the formation and selection of Turing pattern for a class of prey-predator systems with prey harvesting effect and time delay.Firstly,the Turing instability condition induced by the cross-diffusion terms is given by using the stability theory,and the existence region of the Turing pattern of the system is obtained by bifurcation theory.Then,Matlab software is used to simulate the formation and selection results of the Turing pattern of the system.This provides a feasible method for the study of time-delayed reaction-diffusion systems with cross-diffusion in the future,and has an important theoretical application value.