We incorporate a stage-structure characterized by the maturation delay of intraguild (IG) prey into a three-species intraguild predation (IGP) model. We derive conditions for the existence and stability of nonnegative equilibria. By selecting the IG prey maturation delay as a bifurcation parameter at the positive equilibrium, we perform Hopf bifurcation analysis and obtain stability switch results. Furthermore, we conduct double Hopf bifurcation analysis using the mortality rate of immature IG prey and the maturation delay of IG prey as bifurcation parameters to further categorize the model dynamics near the double Hopf bifurcation points. It is demonstrated that our model exhibits complex dynamic behavior, such as stability switches, the coexistence of multiple stable periodic solutions, and quasi-periodic orbits. Our findings indicate that Hopf bifurcation and double Hopf bifurcation can lead to multiple types of species coexistence: species coexist at equilibrium, or through sustained oscillations or irregular oscillations. This is a joint work with Profs. Wanxiao Xu, Hongying Shu, and Lin Wang.