The present invention discloses a cloud-derived wind data testing method and apparatus. The method comprises: from to-be-tested cloud-derived wind data and testing data, matching a cloud-derived wind data file and a testing data file with a time difference being within a preset time different range; calculating a floating point network index number, to which data in the cloud-derived wind data file is projected, in a two-dimensional plane of global equivalent latitude and longitude, and obtaining an integer network index number according to a closest method; obtaining wind speed data in the testing data file according to the testing data file and the network index number; calculating an average value of the wind speed data in the testing data file to obtain a testing value; calculating an average value of wind speed data in the cloud-derived wind data file to obtain a to-be-tested value; and calculating a statistical value of a difference between the testing value and the to-be-tested value. According to the present invention, the quality of the cloud-derived wind data can be tested, thereby ensuring that numerical prediction and typhoon analysis are performed by using high quality cloud-derived wind data.