On the background of the demonstration and analysis on a certain type of anti-tank missile seeker scheme, for single-mode, dual-mode and multi-mode composite seekers of different systems, a hierarchical structure model for the selection and decision-making of the seeker is constructed by the analytic hierarchy process under the constraints of all-weather use ability, anti-interference ability, cost, etc. The judgment matrix is sorted and analyzed for consistency, the best decision plan satisfying the overall needs is obtained. This method can quantitatively evaluate the result of seeker’s type selection and improve the reliability of decision-making.The research in this article has certain reference value for the demonstration of the missile overall scheme.