Currently, the scientific community remains in search of a consensus on an entrepreneurial model, or even a univocal theory on the phenomenon of entrepreneurship. The literature reveals the existence of many indicators to study and to analyse in order to have a general idea about the concept of entrepreneurship. So is it related to the profile and motivations of the entrepreneur himself, the uncertainty, the risk and change resulting from the relationship with the environment, the specificities of each company, etc. The particularity and specificity of each one of these indicators requires a clear and detailed conceptualization as well as a certain caution in the interpretation. This article defends the thesis of the existence of a sine qua non relationship binding four dimensions that are irreducible to each other, but inseparable: the entrepreneur, the company, the relationship with the environment and the difficulties encountered. This article proposes an analysis grid modelling this relationship.