In order to solve the multi-objective product-mix optimal problems oriented cloud manufacturing, SPEA2+ is used to realize the outside processing problem of lifting cross sliding trimensional parking equipment (multi-section trimensional parking equipment), which oriented cloud manufacturing. The outside processing problem is formulated as a multi-objective optimization problem and identified an analytical solution. The case illustration of parts of PSH2 lifting cross sliding trimensional parking equipment is taken as an example, examining the multi-objective optimization model. The model enables managers to determine which products to manufacture and which to outside processing. The solution of the multi-objective optimization formulation enables managers to apply the model by computing an operational ratio. The final model is simpler to apply and requires the computation of fewer variables than other prevalent models.