It discusses the application of inference Kansei Engineering method in electronic products. Combined with the actual design case， it made the design for air purifier to show the train of thought. Though collecting Kansei words and catalogs， it established semantic axis， decomposed design elements，and matched the emotional appeal and design elements， combined theory with reality. The Kansei Engineering should be combined with other methods in design practice， and fully consider the market and customer demand， in order to play a due role in the product design.But as a new research method of design，the Kansei Engineering is more and more widely used in industry design field.