The invention discloses a communication interface converter test system and method for a multi-meter integrated collection device. A communication interface converter is in communication connection with an intelligent meter. The test system comprises an industrial personal computer unit, and an interchangeability test unit, a load capacity test unit, a power consumption test unit and a function test unit electrically connected with the industrial personal computer unit. The invention furthermore provides the communication interface converter test method for the multi-meter integrated collection device. The interchangeability, the load capacity, the overall power consumption and the function of the communication interface converter can be comprehensively and effectively tested, so that thetest efficiency and accuracy are relatively high; and the operation is simple and convenient.