The invention relates to a method for measuring and correcting the angle of attack in a wind turbine farm (11), by which means the yield of each wind turbine (11) of the wind farm is measured initially in order to be able to define a model wind turbine which will be the one which generates the maximum power. The creation of coordinate axes for each blade (15) of the wind turbine (10) allows the angle of attack of the blades (15) of said model wind turbine (10) to be calculated and a reference value to be defined in order to copy same to each blade (15) of the rest of the wind turbines (11), in such a way that the optimum power ratio is obtained for each wind turbine of the wind farm.