At present, studies in spares allotment optimization area mainly focus on the conditions that there is only qualitative or quantitative constraint. Nevertheless, the mix-conditions have not been reported to the best of our knowledge from the literatures. The researches usually concern the single warship, but fewer show concern about the warship formation. In view of this problem, the mission preparation of warship formation before sailing was taken as a research background; the warship formation support cost, warship storage space, warship carrying ability and crew maintenance ability were adopted as the mixed-constraints conditions; the spare parts support probability was served as the objective function. A normal reverse distribution cloud model, the marginal effect and the Lagrange multiplier methods (CML model) were used to solve such warship formation spare parts allotment problem. A method was proposed for the determination and dynamical updating of system resource constraint factors, meanwhile, the selecting methods and calculating process of the model was optimized. The reliability of the method which can provide a new trial for the problem of warship formation spare parts allotment under the mixed constraints condition was proved by an actual case.