Research of product requirement design for the concurrent design

Under the objective condition that the buyers´ market has been formed, in order to rapidly meet the customers´ need and occupy the market, the process for constructing was put forward based on the frame of concurrent design. The content of the requirement design and its function in concurrent design were analyzed. The method for the market´s information acquisition and handling was discussed, based on which the function of the product was refined. Therefore, it would be the main factor in conceptual design of the products and would reduce and evade the uncertainty and blindness. Finally the evaluation criterion based on fuzzy evaluation was provided to judge the design validity and supply the initial data for the following process of the product development.