Background: Previous studies have indicated that the prevalence of tobacco smoking among the Chinese floating population was higher than the general population and that more than half of Chinese floating population smoked tobacco heavily. However, only a few studies aimed to identify the underlying factors leading to heavy daily consumption of tobacco smoking among the Chinese floating population. Therefore, this study aims to investigate what subcategories of the Chinese floating population are more at‐risk of developing heavy tobacco smoking. Method: This research employed the China Labor-force Dynamics Survey 2016 (CLDS) as main data source. Multinomial logistic regression is used to identify the main factors influencing heavy tobacco use within the targeted population. Results: The tobacco smoking rate of the Chinese floating population was equal to 30.5%. The smoking rates of males (56.5%) and women (1.9%) differed significantly. The sub‐categories of the floating population who were the most at‐risk of being heavy smokers display the following characteristics: males (OR: 864.639, 95% CI: 117.821‐6345.250); with junior or senior education level and below (OR: 2.711, 95% CI: 1.315‐5.591; OR: 2.568, 95% CI: 1.465‐4.501); managers of organizations and enterprises (OR: 9.718, 95% CI: 1.537‐61.458); exposed to secondhand smoking environment almost every day (OR: 3.977, 95% CI: 2.711‐5.835). Conclusion: Specific socio‐demography characteristics were associated with tobacco smoking behavior among the Chinese floating population. These factors need to be considered when developing tobacco control interventions among floating population to target the most at‐risk members of this population.