研究基于情境视角，通过建构集体—个体的传言情境解释框架，选取新冠疫情传言一个扩散周期内的571条网络传言，运用社会网络分析法对社会学取向下的“滚雪球效应”进行验证与补充。研究发现，在包含暴发期、逆转期和平稳期的传言扩散周期里，传言者们集体定义了六种新冠疫情社会情境。研究认为，止于逆转期的传言“滚雪球效应”是传言者们为达成某种潜在社会合意而展开的相互结构化的理性交往，并呈现出双重滚动特征。最终，由传言者们集体建构的社会情境，在中观维度具有了持续挑战乃至消解官方话语的权威性。研究囿于数据限制未能在更大范围内提供解释，但认为有必要对传言中的“情境”保持敏感性。

Based on the situation perspective, the research, by constructing a collective individual rumor situation interpretation framework and using the Social Network Analysis method, selected 571 online rumors within a diffusion cycle of the COVID-19 pandemic rumors to verify and supplement the downward snowball effect of sociology. The study found that in the rumor diffusion cycle including the outbreak period, the reversal period and the stable period, the rumormongers collectively defined six social scenarios of the COVID-19 epidemic. According to the research, the snowball effect of the rumors ending in the reversal period is the rational communication of mutual structure carried out by the rumormongers to reach a certain potential social consensus and presents a double rolling feature. Finally, the social situation constructed collectively by the hearers has the authority to continuously challenge and dispel official discourse in the middle dimension. Due to data limitations, the research failed to provide explanations in a wider scope, but it is necessary to remain sensitive to the “situation” in the rumors.