The invention discloses a high-voltage line high-altitude line patrol robot danger self-rescue method. A conventional line patrol robot is comprised. Various conventional detection sensors are arranged. A danger detecting device, an intelligent circuit board, danger analysis software, a danger rescue device and a danger identification device are arranged. The danger analysis software is installedin the intelligent circuit board and provided with a storage module. The danger analysis software detects a danger and starts the danger self-rescue method. According to the invention, dangers of corrosion, abrasion and strand breakage of a power transmission line can be detected in time; solutions are generated for dangers for remedying; serious dangers exceeding a self-rescue range are identified and warned; power transmission line maintenance personnel are informed of coming for rescue; dangers are graded; operation is reliable; and rescue effect self-assessment and evaluating are carried out for subsequent follow-up of the power transmission line maintenance personnel.