Abstract: In high uncertain environment, quick growth of firms mainly depends on the capabilities of flexible responses, and emotional arousal in the very situations underlies organizational improvising. Organizational improvisation may be a series of coherent actions driven by organizational emotion which continually try to activate organizational memory and deviate from the previous organizational cognitive mode. First, the relationship of organizational emotion and organizational improvisation is discussed and thus the corresponding generation model is built. The findings suggest that the convergence between organizational emotional reactions and activities, the intensity of emotional reactions and the efforts of organizational shifts can arouse extemporaneous activities. At last, the statement that organizational improvisation is a series of coherent actions driven by organizational emotion is revified by a case study.

Key words: organizational improvisation, emotional reactions, cognitive efforts, organizational actions