In order to solve the problem that the selection of poles depends too much on engineering experience in the design of autopilot, three pole-placement strategies are proposed. Based on the pole assignment method considering the open-loop cut-off frequency constraint, the analytical expressions of the autopilot parameters under three different pole assignment strategies are derived, and the advantages and disadvantages of each strategy are analyzed. The autopilot response characteristics under three strategies are compared and analyzed through two design examples with different characteristics. The results show that all the three methods can ensure enough stability margin, and the ITAE rule has the fastest response speed, but it has overshoot and single oscillation. The rule with the real pole as the dominant pole can achieve no overshoot in the step response. The phase angle margin is the largest under the concircular rule.