There are obvious differences between low carbon design strategies of architectural and industrial products, in which different design forms are derived from attribute differences. With the relationship between low carbon design and object attributes as the research objective, the work aims to propose a hypothesis that object attributes determine the low carbon design form in product design. A comparative study was conducted on the "high-tech" of buildings and the "Internet of Things" of products to find out the connection between them. Based on the system theory, an analysis was carried out from five aspects of integrity, correlation, dynamics, purpose and hierarchy, and the difference in the attributes of the two types of man-made objects was obtained. Based on the six aspects of system design, function, input and output, program and hierarchy, environment, media and human, six contrast factors were finally formed. In this way, the relationship between low carbon design and object attributes was judged, and then the differences in their design appearances were explained. Object attributes determined the form of low carbon design. Object attributes have an impact on the four design factors of "function", "energy conversion", "environment" and "media", but have no impact on the two design factors of "human" and "program". The method of designing the two factors of "human" and "program" is universal.