Robot for inspection of wind power plant blades characterized in that the robot comprises: a support structure consisting of seven arms: first arm. second arm. third arm, fourth arm, fifth arm, sixth arm and seventh arm, and three guide wheels: a first wheel. a second wheel and a third wheel, wherein the first arm and the second arm, the first arm and the third arm, the third arm and the fifth arm, the second arms and the fourth arm, the sixth arm and the fourth arm, the seventh arm and the fifth arm are hingedly connected with one rotational degree of freedom, and the angular position between the arms is determined by drive systems, and in that the robot further comprises: two scanning arms and with a number of amounting holes fixed at joints between the second arms and the fourth arm, any between the third arm and the fifth arm, the length of the scanning arms and being greater than half the width of the blade in the widest cross-section, wherein, during scanning the blade surface, the scanning arms and, located on both sides of the blade, perform a rotary or swinging movement, and wherein the sixth arm is fixed to the second wheel, the seventh arm is fixed to the first wheel, these two guide wheels rolling on the surface of the blade, and the first arm is fixed to the third wheel rolling on the trailing edge of the blade. a support structure consisting of seven arms: first arm. second arm. third arm, fourth arm, fifth arm, sixth arm and seventh arm, and three guide wheels: a first wheel. a second wheel and a third wheel, wherein the first arm and the second arm, the first arm and the third arm, the third arm and the fifth arm, the second arms and the fourth arm, the sixth arm and the fourth arm, the seventh arm and the fifth arm are hingedly connected with one rotational degree of freedom, and the angular position between the arms is determined by drive systems, and in that the robot further comprises: two scanning arms and with a number of amounting holes fixed at joints between the second arms and the fourth arm, any between the third arm and the fifth arm, the length of the scanning arms and being greater than half the width of the blade in the widest cross-section, wherein, during scanning the blade surface, the scanning arms and, located on both sides of the blade, perform a rotary or swinging movement, and wherein the sixth arm is fixed to the second wheel, the seventh arm is fixed to the first wheel, these two guide wheels rolling on the surface of the blade, and the first arm is fixed to the third wheel rolling on the trailing edge of the blade. two scanning arms and with a number of amounting holes fixed at joints between the second arms and the fourth arm, any between the third arm and the fifth arm, the length of the scanning arms and being greater than half the width of the blade in the widest cross-section, wherein, during scanning the blade surface, the scanning arms and, located on both sides of the blade, perform a rotary or swinging movement, and wherein the sixth arm is fixed to the second wheel, the seventh arm is fixed to the first wheel, these two guide wheels rolling on the surface of the blade, and the first arm is fixed to the third wheel rolling on the trailing edge of the blade.