The present paper tried to provide a review of the different works investigating the attentional cost of postural control. Within the context of a double task, the attentional demand associated to postural control depends on various factors such as (1) the automatic or voluntary focalisation of attention on postural control, (2) the available sensory information, (3) the nature and complexity of the postural task, (4) the subjects' age, and/or (5) the level of subjects' sensory-motor expertise or deficits. Following a brief presentation of the double task paradigm in the context of postural control, the effects of these different factors are analysed more specifically.