The invention discloses a dislocation detecting and self-repairing control method for temperature detectors of a dual-compressor air conditioning system. The method comprises the steps that a, a control circuit is set up; b, a unit is started to operate for a minutes, one compressor (12) is started, the other compressor (12) is shut down, judgment is carried out, if one of the following two conditions is met, inserting dislocation of the temperature detectors is judged, according to the condition 1, detection is carried out once every b minutes, the exhaust temperature of the compressor (12) which is not started is increased by m DEG C or above, meanwhile, the exhaust temperature of the started compressor (12) is decreased by n DEG C or above, and according to the condition 2, the shutdown time of the compressors (12) exceeds c minutes, and the exhaust temperature of the compressors (12) is larger than or equal to z DEG C; and c, a master controller (1) turns on two normally open switches and turns off two normally closed switches. According to the method, whether inserting dislocation of the temperature detectors happens or not can be detected fast and accurately, and the dislocated temperature detectors can be automatically corrected to the correct compressors (12).