Abstract:Based on the current situationSof technology innovation in small and medium sizedSenterprises, this paper points out the value of innovation platform which helps improving the innovation ability of small and medium sizedSenterprises. With the questions ‘what is the innovation platform mechanism’ and ‘how to achieve collaborative innovation’, this paper describes the forming background, development situation, organizational structure, business processes and characteristics about European Innovation Relay Centre which is regarded as the object of study. Then, from the perspective of transformation of knowledge flow in the business system, the paper analyzes the mechanism of knowledge innovation which includes knowledge creation preparation, knowledge creation, knowledge application, and the platform governance mechanism which contains the supervision, coordination, trust, cooperation etc. Finally, the paper summarizes the practicability and reference for China.