With the aggravation of environmental pollution and urban traffic congestion, building a "green, livable, low-carbon, people-oriented" traffic environment has become a new task of urban traffic development, and "slow traffic" has become a research hotspot. Based on binary logistic regression, this paper analyzes the influencing factors of people's bicycle purchase in slow traffic, and finds out what has a significant impact on people's bicycle purchase from eight factors: gender, income, number of family children, education level, whether there is a room, number of cars, commuting distance and living area. According to the experimental results, the corresponding countermeasures and suggestions are put forward, in order to better promote the slow traffic-- bicycle travel, and establish a more low-carbon and environmental protection travel system.