This study was to explore the relationship between the theory of planned behavior, behavioral intention, and healthy dietary factors in adult residing in Beijing, China. A total of 244 adult residing in Beijing were employed and interviewed from October, 2020 to November, 2020. Study results were consistent with our expectation and were summarized as follows : 1) the positive relationship between TPB and intention of healthy eating behavior, 2) the positive relationship among PBC with intention and behaviors of healthy eating, 3) the negative relationship among social support with intention and behaviors of healthy eating. According the results of linear regression and structural equation models, a modified conceptual framework would be more suitable to explain our research hypothesis in view of TPB, behavioral intention and haelthy dietary.