The invention relates to a method of coating a surface (2) of a hollow body (1), said method comprising: a step of positioning said hollow body (1) on a support (7) designed to receive said hollow body (1); and a step of spraying at least one coating material onto said surface (2) of said hollow body (1) by means of a spray device (9), relative movement being imparted to said support (7) and to said spray device (9); said coating method being characterized in that said relative movement takes place at a velocity that varies as a function of the distance (d) between the spray device (9) and said surface (2). Coating machines.