In recent years, the environmental pollution issue has been paid more and more attention, one of them is the air pollution. It brings many dust precipitate issue into the indoor, it also increases the demand of the vacuum cleaner market indirectly, and it has continued to gain popularity. At first, this article analyse the image criterion to define the market position of the product, the user of our target setting is the middle-aged. We use Morphological Analysis and the Finite Structure Method (FSM) to acquaintance the design of the vacuum cleaner and how it composes. Through objective screening, we choice out the ideal proposal; simultaneously, we use the objective tree to decide, Analytic Hierarchy Process (AHP) to find out the design standard and method of weighting, in the way to design the questionnaire once again and to find out the best design modelling and the combination. Finally, we use schematic diagram, the computer assistance design to devise the concretization, also carry on the color plan and the whole appraised, in the way to obtain the optimization design. The research demonstrated that, this vacuum cleaner can conform to the middle-aged demand, through this series of methods, we can elimination the majority uncertainty, and also the feasibility of the gain in output.