Abstract: In order to improve the efficiency of rational decision-making in the process of product
design scheme evaluation, this paper proposed a method of product design scheme evaluation based
on TOPSIS (technique for order preference by similarity to ideal solution) and the method of structure
entropy weight. In the evaluation process, the evaluation indexes of product design scheme were
determined first, and then the experts ranked each evaluation index based on its priority. After
obtaining the “typical ranking”, the weight of each evaluation index was calculated through structural
entropy calculation and “cognition blindness”, thus enabling itself to replace the weight coefficient
set by experts in TOPSIS method. Next, the matrix of weighted standard decision-making for each
index of design scheme was constructed, and then the ideal solution of each index was obtained.
Based on the above procedures, the relative closeness degree of each design scheme to its ideal
solution can be obtained, and the corresponding ranking of design schemes can be determined after
comparison. Finally, the evaluation process was applied to the decision-making of the design scheme
evaluation of recording pens, which verified the feasibility and effectiveness of this method.

Key words: structural entropy weight method, technique for order preference by similarity to ideal
solution, weight of evaluation index, scheme evaluation, recording pen design