In the rumor research field, memory is viewed as one cognitive fact and mechanism of that rumors start and spread out. Theoretically, there are two study approaches, one is from the perspective of individual memory, and the other is from the perspective of social memory. Based on individual memory, the paradigm of rumor psychology tries to reveal the dissemination mechanism of rumor in space, the other adds a diachronic dimension to the rumors study when taking collective memory into account. Two founding researches, one is theory of rumor and collective unconscious archetypes (Jung 1959)and the other is metamorphous insect theory(Lemon 1999), extent dimensions of rumor research and enable rumor research to turn from time-oriented to time-space-oriented. Since 2005, some papers have used perspective of collective memory theory. In order to further explore memory’s role in the communication process of rumor, rumor research in the future ought to be integrated into collective memory research field.