Abstract: Severe perils have ever been found many times by means of perambulation inspection, which provided reliable basis and saved the extremely valued occasions for eliminating the perils or taking retrieval. Perambulation inspection has features of overall, in time and visual, and can’t be replaced by monitoring instruments or automation system. It should carry out the principle that monitoring by instruments should be combined with the perambulation inspection, regulating the work of perambulation inspection seriously, attempting to improve the staff’s abilities, making a timely and exact judgment on the problems found in the perambulation inspection.