Abstract: The induced draft fan of boilers is a major auxiliary equipment in coal-fired power plants, and its operation conditions are critical on the effectiveness of boiler thermodynamic cycle and the safe and stable operation of the plants. The induced draft fan is installed in the boiler flue, where the operating environment is relatively poor, therefore, it is one of the equipments with higher failure rates. On the basis of video processing and with some leading algorithms such as target tracking and state compensation being introduced, this paper proposes an auto-monitoring technology for the static blade failures of induced draft fans power plants. The technology can replace manual inspection and initiate static blade monitoring, thus can effectively avoid the imbalance of power plant operation caused by the not-timely- found static blade failures.