Abstract:In information economy era, knowledge transfer is important for businesses to bring profit, while, as the key of knowledge transfer, knowledge stock has been important factor to effect scientific and technological achievements. Based on the literature review, this paper constructs the impact mechanism concept model of knowledge stock on scientific and technological achievements through the knowledge distance and learning ability. Then, this paper uses the structure equation model to analysis the impact mechanism concept model and has the following findings: the knowledge stock has the significantly positive impact on the scientific and technological achievements; knowledge distance plays a mediation role between knowledge stock and scientific and technological achievements; learning ability plays a regulate role between knowledge stock and knowledge distance, knowledge stock and scientific and technological achievements.