Abstract: To solve the problem that the blade icing occurs normally in many wind farms constructed in domestic northern and southern-central area during winter operation, the blade icing mechanism of the wind-generator set was discussed, while the advantages and disadvantages of types of anti-icing and de-icing techniques were compared and analyzed in detail. Results show that the combined scheme of anti-icing with coating and active de-icing has high application potential, which can ensure the safety and high efficiency of the wind-generator set operation.