Under the interaction of population aging and multi-child policy, intergenerational parenting has become a common phenomenon in China, and the phenomenon of elderly carrying children has also increased. Most existing studies focus on the perspective of a single population and lack the overall consideration of this special group. Taking Fuzhou Hot Spring Park as an example, this paper investigates and analyzes the recreational behaviors of the elderly carrying child groups through the recreational behavior observation method, summarizes the factors affecting environmental characteristics, and explores the correlation between behaviors and environmental characteristics. The results show that according to the child’s behavioral ability level, the population was divided into three categories, elderly-dominated, elderly-assisted, and child-independent; the travel rules, behavioral characteristics, and spatial distribution of the three types are different. According to the characteristics of the sample site, 14 environmental characteristic factors were summarized from four dimensions: recreation facility level, leisure service facility level, activity site level, and natural element level. After the correlation analysis of environment-behavior, it is found that leisure and recreation behaviors are mainly related to the level of recreation facilities, walking and sports fitness behaviors are mainly related to the level of activity venues, and social interaction behaviors are only related to social atmosphere.