The invention relates to power acting through the seawater temperature difference, in particular to a multiple-effect generator and an absorption type power-air exhaust jet refrigeration electricity generating circulation system. The multiple-effect generator comprises a shell, an inlet, a backflow opening, a dilute solution outlet, warm water pipes and liquid distributors; the inlet, the backflowopening and the dilute solution outlet are formed in the shell, the inlet comprises a falling film evaporation inlet, a rising film evaporation inlet and a hydraulic filling evaporation inlet, the falling film evaporation inlet, the rising film evaporation inlet, the backflow opening and a gas outlet are formed in the top surface of the shell, the hydraulic filling evaporation inlet and the dilute solution outlet are formed in the bottom surface of the shell, the warm water pipe and the liquid distributors are arranged in the shell, multiple layers of liquid distributors are arranged in the shell from top to bottom at intervals, the warm water pipes are arranged above the liquid distributors, and at least one warm water pipe is arranged below the last liquid distributor. The ocean temperature difference, that is the widely-existing low-grade heat energy, can be used for driving an absorption type working medium to carry out cold-electricity combined supply circulation, and energy multi-stage use can be achieved independently without solar energy, waste heat, and afterheat.