It can be argued that the Constitution of the Fifth Republic is an asset for France, if only because of its longevity. Besides, given the objective set by its founders in 1958, namely to restore the state around the executive, the Fifth Republic is undoubtedly a success. However, this success has led to an imbalance in the functioning of the institutions, which, despite attempts at reform, remain essentially centred on the head of state. The article addresses this issue through the prism of three fundamental issues: ‘the spirit’ of the Constitution, focused on the reconstruction of the State; ‘institutions’, unequal in favour of the President of the Republic; and ‘practice’, sometimes unconstitutional.