The invention discloses a multifunctional testing device for an optical fiber connector. The multifunctional testing device comprises a rack, a clamping mechanism and an optical fiber torsion mechanism, wherein the clamping mechanism and the optical fiber torsion mechanism are installed on the rack together; the clamping mechanism comprises a cantilever and a fixture, the cantilever is installed on the rack, the position of the cantilever can be adjusted, and the fixture is installed on the cantilever to be used for clamping the optical fiber connector; the optical fiber torsion mechanism comprises a supporting base and a suspension device, and the supporting base is fixedly installed on the rack to be used for bearing the suspension device; the suspension device comprises a rotary base and a winch, the rotary base is rotationally installed on the supporting base, and the winch is installed on the rotary base to be used for changing the direction of an optical fiber connected to the optical fiber connector. Through the multifunctional testing device, the whole testing process can be completed just by one person, operation is easy and convenient, and work efficiency is high.