Provided are a method for a terminal applying an offset to a measurement report triggering condition in a wireless communication system, and a device supporting same. A terminal may measure the quality of a serving cell, measure the quality of a neighboring cell, compare the measurement type of the serving cell with the measurement type of the neighboring cell, and if the measurement type of the serving cell is different from the measurement type of the neighboring cell, apply an offset to a measurement report triggering condition. The measurement type may be any one of a broadband RS-SINR measurement or a narrowband RS-SINR measurement.