The invention discloses a portable device for measuring the three-dimensional wind speed of a wind field, and a manufacturing and application method of the portable device. The device comprises an I-shaped support which consists of an upper end face, a lower end face, and a central part. The central part of the I-shaped support is a streamline shaped housing, and the upper and lower end faces of the I-shaped support are respectively provided with a cover plate. The cover plates are fixed with the streamline shaped housing in a sealed manner, and the interior of the streamline shaped housing is fixedly provided with a clamping groove. The interior of the clamping groove is provided with a probe installation plate, and the probe installation plate is in fixed clamping connection with a clamping groove. The device also comprises a housing installation plate, and the upper part of the housing installation plate is closely provided with a level plate which is hinged to one end of the housing installation plate. The probe installation plate is provided with scale and a plurality of probe installation holes, and positioning grooves are respectively disposed above each probe installation hole. The device is simple in manufacture, is convenient to install, is wide in application range, is low in construction cost, and can achieve the quick measurement of the three-speed wind speed of wind speeds, such as complex mountains and valleys, and downburst.