Background: Weight control is a widespread phenomenon among young adults, especially in women. Aim: This study aimed to determine the prediction factors of weight control intention in a young Chinese sample. Methods: A cross‐sectional study was conducted with 963 (276 male and 687 female; mean age 21.8 ± 4.4 years) adult students from a university in Taiwan. The data were collected from October 2016 to January 2017. Body mass index (BMI), the Chinese version of the Weight Self‐Stigma Questionnaire, the Body Areas Satisfaction Scale and the Media Influence Questionnaire were used as data collection instruments. Results: The participants with weight control intention had higher BMI, weight self‐stigma and media influence scores and lower body satisfaction scores than those without the intention. Female sex, BMI, weight self‐stigma, body satisfaction and media influence were significant predictors of weight control intention for all participants. Conclusion: Before conducting weight loss programmes, the perception of weight self‐stigma and the influence of social media on body image should be confirmed, particularly in women with intention to lose weight. SUMMARY STATEMENT: What is already known about this topic? Weight loss is a popular issue in the health field, owing to the effect of obesity on multiple aspects of life.Females have a higher intention than males to control their weight.People with obesity are more likely to internalize weight stigma from public attitudes and influences and are more dissatisfied than others with their body appearance. What this paper adds? Females have a higher perception of weight self‐stigma and are more dissatisfied than males with their body and the influence of social media on body image.The Chinese young adults with weight control intention had a higher body mass index, weight self‐stigma, body dissatisfaction and media influence than adults without weight control intention.Weight self‐stigma, body dissatisfaction, influence of mass media and body mass index may play synergistic roles in triggering weight control intention in Chinese young adults, particularly in women. The implications of this paper Nurses should pay attention to young adult females with normal BMI and intention to lose weight.Nurses and other healthcare professionals who conduct weight loss programmes should confirm with young adults, particularly with women, their perception of weight self‐stigma, body dissatisfaction and social media influence.Healthy and non‐prejudiced advice should be included in weight loss consultation. [ABSTRACT FROM AUTHOR]