Forest-based wellness (FBW), the enhancement of health and well-being through activities in forested environments, is growing rapidly in China. This paper examines the demand for such experiences based on a survey of mainly young and middle-aged Beijing residents using quantitative analytical methods. There is a widespread demand for forest health and wellness which is considered in three parts: physical and mental health needs, demand for forest health and wellness products, and forest health and wellness destinations. Young and middle-aged people have more obvious needs for relaxation and stress release, whereas middle-aged and elderly people focus mainly on improving immunity and sleep quality, and alleviating cervical and lumbar spine diseases. Respondents prefer experience-based products, and “environment quality”, “infrastructure construction” and “professionals and their service quality” are particularly important. There is a significant positive correlation among the three types of demand. Finally, based on the characteristics of Beijing's forest health and wellness needs, suggestions are provided for forest-based health products and tourism development.