This study targeted on public plazas in Chongqing China and the Boston United States, and analyses several sites in neighborhood scale and spatial scale. Through field observations supported by William H. Whyte’s analysis, data were collected concerning people’s activities in public plazas, and a discussion of how spatial factors have an effect on people’s activities was down. The results suggest that Whyte’s 7 components partly applied to China, and people’s activities are vastly affected by spatial factors, and conjointly influenced by cultural background. Several elements work along may strengthen a vicinity way more.Keywords: Public Plaza; Environmental Behavior; China; United StateseISSN2398-4295 © 2019. The Authors. Published for AMER ABRA cE-Bs by e-International Publishing House, Ltd., UK. This is an open-access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). Peer–review under responsibility of AMER (Association of Malaysian Environment-Behaviour Researchers), ABRA (Association of Behavioural Researchers on Asians) and cE-Bs (Centre for Environment-Behaviour Studies), Faculty of Architecture, Planning & Surveying, Universiti Teknologi MARA, Malaysia. http://dx.doi.org/10.21834/ajbes.v4i15.171