The invention discloses a feather bending degree measuring device and measuring method, and relates to the field of badminton ball production equipment. The feather bending degree measuring device comprises a workbench, a measuring mechanism and a calibrator, and the measuring mechanism and the calibrator are correspondingly arranged on the upper portion of the workbench; the measuring mechanism comprises a base, a slide block and a fixing clamp nozzle, and the slide block and the fixing clamp nozzle are arranged on the upper portion of the base. According to the device, the problems that in existing manual measurement, the feather bending degree is not precise and the efficiency is low and when measuring is performed through a large measuring instrument, the production cost is increased are solved. The device is simple in structure, convenient to operate and carry and low in cost; when the device is used in the badminton ball producing process, the feather bending degree is efficiently, quickly and precisely measured, the production efficiency is improved, the production cost is reduced, the product quality is improved, and the enterprise income is increased.