Abstract: In the methodology of the Bionic design of products, the form and function mechanism has been a totality that guided the user to understand the object since a long time ago. The existence of form together with the function in the structure of an object or organisms is inevitable and has been differently defined by various theoretical perspectives. The manner and the extent of coordination between the two indexes have been one of the challenges in the bionic design methods. Different perspectives in the design methodology tried to redefine the totality of how and why the form and function has a relation with each other. The current study aimed at analysing the requirements, nature of the main functions and their relationship with forms. Accordingly, the study provided a document-based methodology using the rules of form and functions governing the organisms in the nature. Furthermore, it provided the recognition of the main factors determining the existing configuration of organisms to adapt with the successful man-made products. The matching between form and function has been observed in the investigation of natural and artificial samples through obtaining fixed pattern in the processing. The study followed an analytic-comparative research method. The results indicated that based on the bio-morphological and bionical analysis, every organism has a potential to shape its final form based on the body configuration. This potential was a motor generating vector of the organism and defined as an axis. Therefore, the main lines of the design were determined by analysing the generating vectors in the organisms. It was concluded that designing the main lines of the object configuration (based on the initial generating vector) and determining the form and function (simultaneously and step by step together), would lead to a type of product that was as efficient and successful as the organisms regarding functionality and aesthetics.