The subject well-being effects on organizational identification are explored. Using a sample of 480 knowledge workers from Beijing, Guangzhou, and Jiangsu, the dynamic relationships among organizational prestige, organizational identification, and positive affect are examined. Results of structural equation modeling reveal that the hypothesized model fits better than alternative models; it indicats that the organizational prestige has the positive affect on organizational identification. And using positive affect as a mediator, the prestige indirectly impacts on the organizational identification.