Abstract
the work presented in this paper is related to the knowledge management We aim to reuse knowledge during the design processes, in order to help designers in all the phases of the products design.
We propose a reuse knowledge approach based on the assistance of the professional actors with an automatic push (proposition) of knowledge and ease pull (search) of knowledge by helping individual searches. This approach is based upon a Knowledge Reuse System (KRS) which takes into account the roles of the professional actors and their collaborations throughout the product design process in order to bring an automatic help to the actors.