Charger performance testing device and testing method

The invention relates to the technical field of testing, and particularly discloses a charger performance testing device which comprises a supporting mechanism and further comprises a first testing mechanism arranged on the supporting mechanism, and a second testing mechanism is arranged on one side of the first testing mechanism. A charging head and a charging wire which need to be matched are placed on the first supporting block and the second supporting block respectively; the first supporting block and the second supporting block are upwards conveyed through a conveying belt to pass through the position below visual detection equipment, if matching succeeds, the charging performance of the charger continues to be tested, and otherwise, the charging head and the charging wire are removed; the charging head and the charging wire which are subjected to the matching test are taken down, combined and placed on a third supporting block, the rotation rhythm of a third motor is set, when a plug of the charging he