The invention provides a method and device for verifying network performance statistic data, relates to the field of wireless network quality, and solve the problem that accuracy of data generated randomly by an existing network cannot be found. The method for verifying the network performance statistic data comprises the following steps: obtaining the network performance statistic data in a preset time granularity; obtaining raw performance statistic data of the same-type performance indexes in multiple kinds of pre-stored raw performance statistic data, and mapping the obtained raw network performance statistic data of the same-type performance indexes into corresponding mapping results according to a pre-established mapping relationship between the raw network performance statistic data and a verification algorithm; and verifying whether the obtained network performance statistic data are consistent with the mapping results. So the accuracy of the data is known, and, in this way, accuracy of a performance index can be assessed by utilizing multiple data sources of the same-type performance indexes.